Christina Aguilera Pictures

Christina Aguilera

The Voice, Christina Aguilera, 'The Live Playoffs, Part 1', Season 3, Ep. #18, 11/05/2012, ©NBC

The Voice, Christina Aguilera, 'The Live Playoffs, Result', Season 3, Ep. #20, 11/08/2012, ©NBC

The Voice, Christina Aguilera, 'Live Results: 4 Go Home', Season 2, Ep. #11, 04/03/2012, ©NBC

The Voice, Christina Aguilera, 'Live Eliminations', Season 5, Ep. #15, 11/07/2013, ©NBC

Christina Aguilera at talk show appearance for NBC Today Show Concert with Christina Aguilera, Rockefeller Plaza, New York, NY June 8, 2010. Photo By: Gregorio T. Binuya/Everett Collection

The Voice, Christina Aguilera, 'Live Top 10 Performances', Season 5, Ep. #18, 11/18/2013, ©NBC

The Voice, Christina Aguilera, 'Live Results Show', Season 3, Ep. #22, 11/13/2012, ©NBC

The Voice, Christina Aguilera, 'The Live Playoffs, Part 1', Season 5, Ep. #13, 11/04/2013, ©NBC

The Voice, Christina Aguilera, 'Live Eliminations', Season 5, Ep. #23, 12/03/2013, ©NBC

The Voice, Christina Aguilera, 'Live Results: 4 Go Home', Season 2, Ep. #11, 04/03/2012, ©NBC

The Voice, Christina Aguilera, 'The Live Performance, Week 2', Season 2, Ep. #12, 04/09/2012, ©NBC

Supergirl, Christina Aguilera, ©KSITE

The Tonight Show With Jay Leno, Jay Leno (L), Christina Aguilera (R), 05/25/1992, ©NBC

The 2013 Billboard Music Awards, Christina Aguilera, 05/19/2013, ©ABC

The Voice, Adam Levine (L), Pharrell Williams (C), Christina Aguilera (R), 'Live Top 6 Performances', Season 8, Ep. #23, 05/04/2015, ©NBC

The Voice, Christina Aguilera, 'Live Top 6 Performances', Season 8, Ep. #23, 05/04/2015, ©NBC

The Voice, from left: Adam Levine, Pharrell Williams, Christina Aguilera, Blake Shelton, 'Live Top 6 Performances', Season 8, Ep. #23, 05/04/2015, ©NBC

The Voice, Christina Aguilera, 'Live Top 6 Performances', Season 8, Ep. #23, 05/04/2015, ©NBC

Supergirl, Christina Aguilera, ©KSITE

The Voice, Christina Aguilera, 'The Knockouts, Part 2', Season 3, Ep. #17, 10/30/2012, ©NBC

The Voice, Cee-Lo Green (L), Christina Aguilera (C), Blake Shelton (R), 'The Knockouts, Part 2', Season 3, Ep. #17, 10/30/2012, ©NBC

The Voice, from left: Christina Aguilera, Carson Daly, Cee-Lo Green, Nicholas David, Trevin Hunte, 'The Knockouts, Part 2', Season 3, Ep. #17, 10/30/2012, ©NBC

The Voice, Christina Aguilera (L), Carson Daly (R), 'The Knockouts, Part 2', Season 3, Ep. #17, 10/30/2012, ©NBC

The Voice, Adam Levine (L), Cee-Lo Green (C), Christina Aguilera (R), 'The Live Playoffs, Part 1', Season 3, Ep. #18, 11/05/2012, ©NBC

The Voice, Christina Aguilera, 'The Live Playoffs, Part 1', Season 3, Ep. #18, 11/05/2012, ©NBC

The Voice, from left: Adam Levine, Cee-Lo Green, Christina Aguilera, Blake Shelton, 'The Live Playoffs, Part 1', Season 3, Ep. #18, 11/05/2012, ©NBC

The Voice, from left: Blake Shelton, Christina Aguilera, Carson Daly, Cee-Lo Green, Adam Levine, 'The Live Playoffs, Part 1', Season 3, Ep. #18, 11/05/2012, ©NBC

The Voice, from left: Blake Shelton, Christina Aguilera, Melanie Martinez, Adam Levine, 'The Live Playoffs, Part 1', Season 3, Ep. #18, 11/05/2012, ©NBC

The Voice, Christina Aguilera (L), Cee-Lo Green (R), 'The Live Playoffs, Part 1', Season 3, Ep. #18, 11/05/2012, ©NBC

The Voice, Christina Aguilera, 'The Live Playoffs, Part 1', Season 3, Ep. #18, 11/05/2012, ©NBC

The Voice, Cee-Lo Green (L), Christina Aguilera (R), 'The Live Playoffs, Part 1', Season 3, Ep. #18, 11/05/2012, ©NBC

The Voice, from left: Adam Levine, Cee-Lo Green, Christina Aguilera, Blake Shelton, 'The Live Playoffs, Part 2', Season 3, Ep. #19, 11/07/2012, ©NBC

The Voice, Christina Aguilera, 'The Live Playoffs, Part 2', Season 3, Ep. #19, 11/07/2012, ©NBC

The Voice, Christina Aguilera, 'The Live Playoffs, Part 1', Season 5, Ep. #13, 11/04/2013, ©NBC

The Voice, Adam Levine (L), Cee-Lo Green (C), Christina Aguilera (R), 'The Live Playoffs, Part 1', Season 5, Ep. #13, 11/04/2013, ©NBC

The Voice, from left: Adam Levine, Cee-Lo Green, Christina Aguilera, Blake Shelton, 'The Live Playoffs, Part 1', Season 5, Ep. #13, 11/04/2013, ©NBC

The Voice, Blake Shelton (L), Christina Aguilera (C), Adam Levine (R), 'Season 1', 04/26/2011, ©NBC

The Voice, Blake Shelton (L), Christina Aguilera (R), 04/26/2011, ©NBC

The Voice, Usher (L), Christina Aguilera (C), Adam Levine (R), 04/26/2011, ©NBC

The Voice, Christina Aguilera, 'Live Top 10 Performances', Season 4, Ep. #19, 05/20/2013, ©NBC

The Voice, Christina Aguilera, 'The Live Playoffs, Part 1', Season 5, Ep. #13, 11/04/2013, ©NBC

The Voice, Adam Levine (L), Christina Aguilera (C), Cee-Lo Green (R), 'The Live Playoffs, Part 2', Season 5, Ep. #14, 11/05/2013, ©NBC

The Voice, from left: Adam Levine, Cee-Lo Green, Christina Aguilera, Blake Shelton, 'The Live Playoffs, Part 2', Season 5, Ep. #14, 11/05/2013, ©NBC

The Voice, from left: Adam Levine, Cee-Lo Green, Christina Aguilera, Blake Shelton, 'Live Eliminations', Season 5, Ep. #15, 11/07/2013, ©NBC

The Voice, Christina Aguilera, 'Live Eliminations', Season 5, Ep. #15, 11/07/2013, ©NBC

The Voice, from left: Adam Levine, Cee-Lo Green, Christina Aguilera, Blake Shelton, 'The Live Playoffs, Part 1', Season 5, Ep. #13, 11/04/2013, ©NBC

The Voice, from left: Adam Levine, Cee-Lo Green, Christina Aguilera, Blake Shelton, 'Live Eliminations', Season 5, Ep. #15, 11/07/2013, ©NBC

The Voice, from left: Adam Levine, Cee-Lo Green, Christina Aguilera, Blake Shelton, 'Live Eliminations', Season 5, Ep. #17, 11/12/2013, ©NBC

The Voice, Christina Aguilera (L), Blake Shelton (R), 'Live Top 10 Performances', Season 5, Ep. #18, 11/18/2013, ©NBC

The Voice, from left: Carson Daly, Adam Levine, Cee-Lo Green, Christina Aguilera, 'Live Top 10 Performances', Season 5, Ep. #18, 11/18/2013, ©NBC

The Voice, Christina Aguilera, 'Live Eliminations', Season 5, Ep. #19, 11/19/2013, ©NBC

The Voice, Adam Levine (L), Cee-Lo Green (C), Christina Aguilera (R), 'Live Eliminations', Season 5, Ep. #19, 11/19/2013, ©NBC

The Voice, Christina Aguilera, 'Live Eliminations', Season 5, Ep. #19, 11/19/2013, ©NBC

The Voice, Cee-Lo Green (L), Christina Aguilera (C), Blake Shelton (R), 'Live Eliminations', Season 5, Ep. #19, 11/19/2013, ©NBC

The Voice, from left: Blake Shelton, Christina Aguilera, Cee-Lo Green, Adam Levine, 'Live Eliminations', Season 5, Ep. #19, 11/19/2013, ©NBC

The Voice, from left: Cee-Lo Green, Adam Levine, Christina Aguilera, Blake Shelton, 'Live Eliminations', Season 5, Ep. #19, 11/19/2013, ©NBC

The Voice, Christina Aguilera (L), Lady Gaga (R), 'Live Eliminations', Season 5, Ep. #19, 11/19/2013, ©NBC

The Voice, Christina Aguilera (L), Blake Shelton (R), 'Live Eliminations', Season 5, Ep. #19, 11/19/2013, ©NBC

The Voice, Christina Aguilera, 'Live Results Show', Season 3, Ep. #22, 11/13/2012, ©NBC

The Voice, Christina Aguilera, 'The Live Playoffs, Part 1', Season 5, Ep. #13, 11/04/2013, ©NBC

The Voice, from left: Adam Levine, Cee-Lo Green, Christina Aguilera, Blake Shelton, 'The Live Playoffs, Part 1', Season 5, Ep. #13, 11/04/2013, ©NBC

The Voice, Christina Aguilera, 'The Live Playoffs, Part 2', Season 5, Ep. #14, 11/05/2013, ©NBC

The Voice, Cee-Lo Green (L), Christina Aguilera (R), 'The Live Playoffs, Part 2', Season 5, Ep. #14, 11/05/2013, ©NBC

The Voice, Cee-Lo Green (L), Christina Aguilera (C), Blake Shelton (R), 'Live Eliminations', Season 5, Ep. #15, 11/07/2013, ©NBC

The Voice, Cee-Lo Green (L), Christina Aguilera (R), 'Live Eliminations', Season 5, Ep. #15, 11/07/2013, ©NBC

The Voice, from left: Adam Levine, Cee-Lo Green, Christina Aguilera, Blake Shelton, 'Live Eliminations', Season 5, Ep. #15, 11/07/2013, ©NBC

The Voice, Christina Aguilera, 'Live Eliminations', Season 5, Ep. #15, 11/07/2013, ©NBC

The Voice, Cee-Lo Green (L), Christina Aguilera (R), 'Live Top 12 Performances', Season 5, Ep. #16, 11/11/2013, ©NBC

The Voice, from left: Adam Levine, Cee-Lo Green, Christina Aguilera, Blake Shelton, 'Live Top 12 Performances', Season 5, Ep. #16, 11/11/2013, ©NBC

The Voice, Cee-Lo Green (L), Christina Aguilera (C), Blake Shelton (R), 'Live Eliminations', Season 5, Ep. #17, 11/12/2013, ©NBC

The Voice, from left: Carson Daly, Adam Levine, Cee-Lo Green, Christina Aguilera, Blake Shelton, 'Live Eliminations', Season 5, Ep. #23, 12/03/2013, ©NBC

The Voice, Cee-Lo Green (L), Christina Aguilera (C), Blake Shelton (R), 'Live Eliminations', Season 5, Ep. #23, 12/03/2013, ©NBC

The Voice, Christina Aguilera (L), Lady Gaga (R), 'Live Finale', Season 5, Ep. #27, 12/17/2013, ©NBC

The Voice, Christina Aguilera (L), Blake Shelton (R), 'Live Finale', Season 5, Ep. #27, 12/17/2013, ©NBC

The Voice, from left: Adam Levine, Cee-Lo Green, Christina Aguilera, Blake Shelton, 'Live Final Performances', Season 5, Ep. #26, 12/16/2013, ©NBC

The Voice, Christina Aguilera, 'Live Final Performances', Season 5, Ep. #26, 12/16/2013, ©NBC

The Voice, from left: Adam Levine, Cee-Lo Green, Christina Aguilera, Blake Shelton, 'Live Final Performances', Season 5, Ep. #26, 12/16/2013, ©NBC

The Voice, from left: Blake Shelton, Christina Aguilera, Adam Levine, Cee-Lo Green, 'Live Final Performances', Season 5, Ep. #26, 12/16/2013, ©NBC

The Voice, from left: Blake Shelton, Christina Aguilera, Cee-Lo Green, Adam Levine, 'Live Final Performances', Season 5, Ep. #26, 12/16/2013, ©NBC

The Voice, from left: Adam Levine, Cee-Lo Green, Christina Aguilera, Blake Shelton, 'Live Semi-Final Performances', Season 5, Ep. #24, 12/09/2013, ©NBC

The Voice, Christina Aguilera (L), Blake Shelton (R), 'Live Semi-Final Performances', Season 5, Ep. #24, 12/09/2013, ©NBC

The Voice, from left: Carson Daly, Adam Levine, Cee-Lo Green, Christina Aguilera, 'Live Semi-Final Performances', Season 5, Ep. #24, 12/09/2013, ©NBC

The Voice, from left: Adam Levine, Cee-Lo Green, Christina Aguilera, Blake Shelton, 'Live Top 6 Performances', Season 5, Ep. #22, 12/02/2013, ©NBC

The Voice, from left: Adam Levine, Cee-Lo Green, Christina Aguilera, Blake Shelton, 'Live Eliminations', Season 5, Ep. #21, 11/26/2013, ©NBC

The Voice, Christina Aguilera, 'Live Eliminations', Season 5, Ep. #19, 11/19/2013, ©NBC

The Voice, from left: Adam Levine, Cee-Lo Green, Christina Aguilera, Blake Shelton, 'Live Eliminations', Season 5, Ep. #19, 11/19/2013, ©NBC

The Voice, Christina Aguilera, 'Live Eliminations', Season 5, Ep. #19, 11/19/2013, ©NBC

The Voice, Cee-Lo Green (L), Christina Aguilera (C), Blake Shelton (R), 'Live Top 10 Performances', Season 5, Ep. #18, 11/18/2013, ©NBC

The Voice, from left: Adam Levine, Cee-Lo Green, Christina Aguilera, Blake Shelton, 'Live Top 10 Performances', Season 5, Ep. #18, 11/18/2013, ©NBC

The Voice, Cee-Lo Green (L), Christina Aguilera (R), 'Live Top 10 Performances', Season 5, Ep. #18, 11/18/2013, ©NBC

The Voice, from left: Adam Levine, Cee-Lo Green, Christina Aguilera, Blake Shelton, 'Live Top 10 Performances', Season 5, Ep. #18, 11/18/2013, ©NBC

The Voice, from left: Adam Levine, Cee-Lo Green, Christina Aguilera, Blake Shelton, 'Live Top 12 Performances', Season 5, Ep. #16, 11/11/2013, ©NBC

The Voice, Adam Levine (L), Christina Aguilera (C), Cee-Lo Green (R), 'Live Eliminations', Season 5, Ep. #17, 11/12/2013, ©NBC

The Voice, from left: Adam Levine, Cee-Lo Green, Christina Aguilera, Blake Shelton, 'Live Eliminations', Season 5, Ep. #17, 11/12/2013, ©NBC

The Voice, Cee-Lo Green (L), Christina Aguilera (R), 'Live Eliminations', Season 5, Ep. #17, 11/12/2013, ©NBC

The Voice, Christina Aguilera (L), Blake Shelton (R), 'The Live Playoffs, Part 2', Season 5, Ep. #14, 11/05/2013, ©NBC

The Voice, from left: Adam Levine, Cee-Lo Green, Christina Aguilera, Blake Shelton, 'The Live Playoffs, Part 2', Season 5, Ep. #14, 11/05/2013, ©NBC

The Voice, Christina Aguilera, 'The Live Playoffs, Part 1', Season 5, Ep. #13, 11/04/2013, ©NBC

The Voice, from left: Adam Levine, Cee-Lo Green, Christina Aguilera, Blake Shelton, 'The Live Playoffs, Part 1', Season 5, Ep. #13, 11/04/2013, ©NBC

The Voice, Christina Aguilera (L), Flo Rida (R), 'The Live Playoffs, Part 1', Season 5, Ep. #13, 11/04/2013, ©NBC

The Voice, Christina Aguilera, 'The Live Playoffs, Part 1', Season 5, Ep. #13, 11/04/2013, ©NBC

The Tonight Show With Jay Leno, Christina Aguilera (L), Jay Leno (R), 'Season', ©NBC

The Voice, Christina Aguilera, 'The Knockouts, Part 2', Season 5, Ep. #12, 10/29/2013, ©NBC

The Voice, from left: Adam Levine, Cee-Lo Green, Christina Aguilera, Blake Shelton, 'The Knockouts, Part 2', Season 5, Ep. #12, 10/29/2013, ©NBC

The Voice, from left: Blake Shelton, Christina Aguilera, Cee-Lo Green, Adam Levine, 'The Blind Auditions Premiere Part 5', Season 5, Ep. #5, 10/07/2013, ©NBC

The Voice, Christina Aguilera (L), Cee-Lo Green (C), Adam Levine (R), 'The Blind Auditions Premiere Part 5', Season 5, Ep. #5, 10/07/2013, ©NBC

The Voice, Christina Aguilera, 'Best Of The Blinds', Season 5, Ep. #6, 10/08/2013, ©NBC

The Voice, from left: Blake Shelton, Cee-Lo Green, Christina Aguilera, Adam Levine, 'Best Of The Blinds', Season 5, Ep. #6, 10/08/2013, ©NBC

The Voice, Christina Aguilera (L), Blake Shelton (R), 'Best Of The Blinds', Season 5, Ep. #6, 10/08/2013, ©NBC

The Voice, Blake Shelton (L), Christina Aguilera (C), Cee-Lo Green (R), 'The Blind Auditions Premiere Part 4', Season 5, Ep. #4, 10/01/2013, ©NBC

The Voice, Christina Aguilera, 'The Blind Auditions Premiere', Season 5, Ep. #1, 09/23/2013, ©NBC

The Voice, from left: Cee-Lo Green, Adam Levine, Christina Aguilera, Blake Shelton, 'The Blind Auditions Premiere', Season 5, Ep. #1, 09/23/2013, ©NBC

The Voice, from left: Adam Levine, Cee-Lo Green, Christina Aguilera, Blake Shelton, 'The Blind Auditions Premiere', Season 5, Ep. #1, 09/23/2013, ©NBC

The Voice, Christina Aguilera, 'The Blind Auditions Premiere Part 2', Season 5, Ep. #2, 09/24/2013, ©NBC

The Voice, from left: Adam Levine, Cee-Lo Green, Christina Aguilera, Blake Shelton, 'The Blind Auditions Premiere Part 2', Season 5, Ep. #2, 09/24/2013, ©NBC

The Voice, Christina Aguilera, 04/26/2011, ©NBC

BURLESQUE, from left: Cher, Christina Aguilera, 2010. ph: Stephen Vaughan/©Screen Gems

BURLESQUE, Christina Aguilera, 2010. ph: Stephen Vaughan/©Screen Gems

The Voice, from left: Cee-Lo Green, Christina Aguilera, Adam Levine, Blake Shelton, 04/26/2011, ©NBC

BURLESQUE, Christina Aguilera (center), 2010. ph: Stephen Vaughan/©Screen Gems

BURLESQUE, Christina Aguilera, 2010. ph: Stephen Vaughan/©Screen Gems

The Voice, from left: Christina Aguilera, Chris Mann, Carson Daly, Blake Shelton, 'The Live Performance, Week 1', Season 2, Ep. #10, 04/02/2012, ©NBC

The Voice, Christina Aguilera (L), Carson Daly (R), 'The Live Performance, Week 1', Season 2, Ep. #10, 04/02/2012, ©NBC

The Voice, Christina Aguilera, 'Live Results: 4 Go Home', Season 2, Ep. #11, 04/03/2012, ©NBC

The Voice, from left: Christina Aguilera, Ashley de la Rosa, Chris Mann, Carson Daly, Blake Shelton, Erin Willetts, Jermaine Paul, 'The Live Performance, Week 2', Season 2, Ep. #12, 04/09/2012, ©NBC

The Voice, from left: Ashley de la Rosa, Christina Aguilera, Chris Mann, Jesse Campbell, 'The Live Performance, Week 2', Season 2, Ep. #12, 04/09/2012, ©NBC

The Voice, Christina Aguilera, 'The Live Performance, Week 2', Season 2, Ep. #12, 04/09/2012, ©NBC

The Voice, Christina Aguilera (L), Ashley de la Rosa (C), Carson Daly (R), 'The Live Performance, Week 2', Season 2, Ep. #12, 04/09/2012, ©NBC

The Voice, Christina Aguilera, 'Live Results, 4 Go Home', Season 2, Ep. #13, 04/10/2012, ©NBC

The Voice, from left: Blake Shelton, Jermaine Paul, Christina Aguilera, Chris Mann, Carson Daly, Juliet Simms, Cee-Lo Green, Tony Lucca, Adam Levine, 'Live Eliminations', Season 2, Ep. #15, 04/17/2012, ©NBC

The Voice, Christina Aguilera (L), Chris Mann (C), Carson Daly (R), 'Live Eliminations', Season 2, Ep. #15, 04/17/2012, ©NBC

The Voice, Chris Mann (L), Christina Aguilera (R), 'Live Eliminations', Season 2, Ep. #15, 04/17/2012, ©NBC

The Voice, Christina Aguilera (L), Kelly Clarkson (R), 04/26/2011, ©NBC

The Voice, Adam Levine (L), Christina Aguilera (R), 04/26/2011, ©NBC

The Voice, from left: Blake Shelton, Christina Aguilera, Adam Levine, Cee-Lo Green, 04/26/2011, ©NBC

The Voice, Christina Aguilera, 04/26/2011, ©NBC

The Voice, Christina Aguilera (L), Carson Daly (R), 'Live Performance, Quarterfinals', Season 2, Ep. #14, 04/16/2012, ©NBC

The Voice, Christina Aguilera (L), Chris Mann (C), Carson Daly (R), 'Live Performance, Quarterfinals', Season 2, Ep. #14, 04/16/2012, ©NBC

The Voice, Christina Aguilera (L), Carson Daly (R), 'Live Performance, Quarterfinals', Season 2, Ep. #14, 04/16/2012, ©NBC

The Voice, Adam Levine (L), Christina Aguilera (R), 04/26/2011, ©NBC

The Voice, from left: Adam Levine, Cee-Lo Green, Blake Shelton, Christina Aguilera, 04/26/2011, ©NBC

The 2013 Billboard Music Awards, Pitbull (L), Christina Aguilera (R), 05/19/2013, ©ABC

The 2013 Billboard Music Awards, Christina Aguilera (L), Pitbull (R), 05/19/2013, ©ABC

The 2013 Billboard Music Awards, Pitbull (L), Christina Aguilera (R), 05/19/2013, ©ABC

BURLESQUE, Christina Aguilera (blonde), 2010. ©Screen Gems

The 39th Annual People's Choice Awards, Josh Duhamel (L), Christina Aguilera (R), 01/09/2013, ©CBS

The 39th Annual People's Choice Awards, Christina Aguilera, 01/09/2013, ©CBS

The 39th Annual People's Choice Awards, Christina Aguilera (L), Simon Helberg (C), Chris Colfer (R), 01/09/2013, ©CBS

The Tonight Show With Jay Leno, Christina Aguilera (L), Bryan Branly (R), 'Season', ©NBC

The Tonight Show With Jay Leno, Christina Aguilera (L), Jay Leno (R), 'Season', ©NBC

The Tonight Show With Jay Leno, Christina Aguilera, 'Season', ©NBC

The Tonight Show With Jay Leno, Christina Aguilera (L), Paul Reiser (C), Jay Leno (R), 'Season', ©NBC

The Tonight Show With Jay Leno, Christina Aguilera (L), Jay Leno (R), 'Season 22', ©NBC

The Tonight Show With Jay Leno, Christina Aguilera, 'Season 22', ©NBC

The Tonight Show With Jay Leno, Christina Aguilera (L), Jay Leno (R), 'Season 22', ©NBC

The 39th Annual People's Choice Awards, Christina Aguilera, 01/09/2013, ©CBS

The Voice, Christina Aguilera, 'Season 3', 09/10/2012, ©NBC

The Voice, Christina Aguilera, 'The Battles, Part 1', Season 1, Ep. #3, 05/10/2011, ©NBC

The Voice, Christina Aguilera, 'Blind Auditions, Part 1', Season 3, Ep. #1, 09/10/2012, ©NBC

The Voice, Christina Aguilera (L), Cee-Lo Green (C), Adam Levine (R), 'Blind Auditions, Part 2', Season 3, Ep. #2, 09/11/2012, ©NBC

The Voice, Blake Shelton (L), Christina Aguilera (R), 'Blind Auditions, Part 2', Season 3, Ep. #2, 09/11/2012, ©NBC

The Voice, from left: Blake Shelton, Christina Aguilera, Cesar Castillo, Cee-Lo Green, Adam Levine, 'Blind Auditions, Part 2', Season 3, Ep. #2, 09/11/2012, ©NBC

The Voice, from left: Blake Shelton, Christina Aguilera, Cee-Lo Green, Adam Levine, 'Blind Auditions, Part 3', Season 3, Ep. #3, 09/12/2012, ©NBC

The Voice, Christina Aguilera (L), Cee-Lo Green (R), 'Blind Auditions, Part 1', Season 3, Ep. #1, 09/10/2012, ©NBC

The Voice, Christina Aguilera (L), Adam Levine (R), 'Blind Auditions, Part 1', Season 3, Ep. #1, 09/10/2012, ©NBC

The Voice, from left: Blake Shelton, Christina Aguilera, Cee-Lo Green, Adam Levine, 'Blind Auditions Continued', Season 3, Ep. #4, 09/17/2012, ©NBC

The Voice, Blake Shelton (L), Christina Aguilera (C), Cee-Lo Green (R), 'Blind Auditions Continued', Season 3, Ep. #4, 09/17/2012, ©NBC

The Voice, Christina Aguilera, 'Blind Auditions Continued', Season 3, Ep. #4, 09/17/2012, ©NBC

The Voice, Blake Shelton (L), Christina Aguilera (C), Cee-Lo Green (R), 'Blind Auditions Continued', Season 3, Ep. #4, 09/17/2012, ©NBC

The Voice, from left: Blake Shelton, Christina Aguilera, Cee-Lo Green, Adam Levine, 'Blind Auditions Continued', Season 3, Ep. #5, 09/18/2012, ©NBC

The Voice, Christina Aguilera (L), Cee-Lo Green (C), Adam Levine (R), 'Blind Auditions Continued', Season 3, Ep. #5, 09/18/2012, ©NBC

The Voice, Blake Shelton (L), Christina Aguilera (C), Adam Levine (R), 'Blind Auditions Continued', Season 3, Ep. #5, 09/18/2012, ©NBC

The Voice, Blake Shelton (L), Christina Aguilera (R), 'Blind Auditions Continued', Season 3, Ep. #6, 09/24/2012, ©NBC

The Voice, from left: Blake Shelton, Christina Aguilera, Cee-Lo Green, Adam Levine, 'Blind Auditions Continued', Season 3, Ep. #7, 09/25/2012, ©NBC

The Voice, from left: Blake Shelton, Christina Aguilera, Amanda Brown, Cee-Lo Green, Adam Levine, 'Blind Auditions Continued', Season 3, Ep. #7, 09/25/2012, ©NBC

The Voice, Christina Aguilera, 'Blind Auditions Continued', Season 3, Ep. #8, 10/01/2012, ©NBC

The Voice, from left: Blake Shelton, Christina Aguilera, Joanie Michele, Cee-Lo Green, 'Blind Auditions Continued', Season 3, Ep. #8, 10/01/2012, ©NBC

The Voice, Christina Aguilera (L), Adam Levine (R), 'Blind Auditions Continued', Season 3, Ep. #8, 10/01/2012, ©NBC

The Voice, from left: Blake Shelton, Christina Aguilera, Cee-Lo Green, Adam Levine, 'Blind Auditions Continued', Season 3, Ep. #8, 10/01/2012, ©NBC

The Voice, Christina Aguilera, 'The Best Of Blind Auditions Continued', Season 3, Ep. #9, 10/02/2012, ©NBC

The Voice, Blake Shelton (L), Christina Aguilera (C), Adam Levine (R), 'The Best Of Blind Auditions Continued', Season 3, Ep. #9, 10/02/2012, ©NBC

The Voice, Blake Shelton (L), Christina Aguilera (C), Cee-Lo Green (R), 'The Best Of Blind Auditions Continued', Season 3, Ep. #9, 10/02/2012, ©NBC

The Voice, Christina Aguilera (L), Billie Joe Armstrong (C), Paul Mirkovich (R), 'The Battles Premiere', Season 3, Ep. #10, 10/08/2012, ©NBC

The Voice, Christina Aguilera (L), Cee-Lo Green (R), 'The Blind Auditions, Part 4', Season 2, Ep. #4, 02/20/2012, ©NBC

The Voice, Christina Aguilera, 'The Battles Begin', Season 2, Ep. #6, 03/05/2012, ©NBC

The Voice, Paul Mirkovich (L), Christina Aguilera (R), 'The Battles, Week 2', Season 2, Ep. #7, 03/12/2012, ©NBC

The Voice, Christina Aguilera, 'The Blind Auditions, Part 2', Season 2, Ep. #2, 02/06/2012, ©NBC

The Voice, Christina Aguilera (L), Carson Daly (R), 'Live Eliminations', Season 2, Ep. #15, 04/17/2012, ©NBC

The Voice, from left: Cee-Lo Green, Adam Levine, Christina Aguilera, Blake Shelton, 'Live Finale', Season 2, Ep. #21, 05/08/2012, ©NBC

The Voice, from left: Blake Shelton, Christina Aguilera, Cee-Lo Green, Adam Levine, 'Blind Auditions, Part 1', Season 3, Ep. #1, 09/10/2012, ©NBC

The Voice, Blake Shelton (L), Christina Aguilera (C), Cee-Lo Green (R), 'Blind Auditions, Part 1', Season 3, Ep. #1, 09/10/2012, ©NBC

The Voice, from left: Blake Shelton, Christina Aguilera, Cee-Lo Green, Adam Levine, 'Blind Auditions, Part 1', Season 3, Ep. #1, 09/10/2012, ©NBC

The Voice, Christina Aguilera (L), Billie Joe Armstrong (R), 'The Battles Premiere Part 2', Season 3, Ep. #11, 10/09/2012, ©NBC

The Voice, Billie Joe Armstrong (L), Christina Aguilera (C), Paul Mirkovich (R), 'The Battles Premiere Part 2', Season 3, Ep. #11, 10/09/2012, ©NBC

The Voice, from left: Billie Joe Armstrong, Christina Aguilera, Paul Mirkovich, Dez Duron, 'The Battles Continue', Season 3, Ep. #12, 10/15/2012, ©NBC

The Voice, Christina Aguilera (L), Billie Joe Armstrong (R), 'The Battles Continue', Season 3, Ep. #14, 10/22/2012, ©NBC

The Voice, Billie Joe Armstrong (L), Christina Aguilera (R), 'The Battles Continue', Season 3, Ep. #14, 10/22/2012, ©NBC

The Voice, from left: Christina Milian, Blake Shelton, Christina Aguilera, Cee-Lo Green, Adam Levine, Carson Daly, 'Live Final Performances', Season 3, Ep. #31, 12/17/2012, ©NBC

The Voice, from left: Blake Shelton, Christina Aguilera, Cee-Lo Green, Adam Levine, 'Live Final Performances', Season 3, Ep. #31, 12/17/2012, ©NBC

The Voice, from left: Christina Milian, Blake Shelton, Christina Aguilera, Cee-Lo Green, Adam Levine, Carson Daly, 'Live Final Performances', Season 3, Ep. #31, 12/17/2012, ©NBC

The Voice, from left: Cassadee Pope, Christina Milian, Christina Aguilera, Carson Daly, 'Live Finale', Season 3, Ep. #32, 12/18/2012, ©NBC

The Voice, from left: Blake Shelton, Christina Aguilera, Cee-Lo Green, Adam Levine, 'Live Finale', Season 3, Ep. #32, 12/18/2012, ©NBC

The Voice, Adam Levine (L), Cee-Lo Green (C), Christina Aguilera (R), 'The Live Playoffs, Part 2', Season 3, Ep. #19, 11/07/2012, ©NBC

The Voice, from left: Adam Levine, Cee-Lo Green, Christina Aguilera, Blake Shelton, 'The Live Playoffs, Part 2', Season 3, Ep. #19, 11/07/2012, ©NBC

The Voice, from left: Dez Duron, Christina Aguilera, Carson Daly, Cee-Lo Green, Nicholas David, Trevin Hunte, 'The Live Playoffs, Part 2', Season 3, Ep. #19, 11/07/2012, ©NBC

The Voice, Christina Aguilera, 'Live Top 12 Performances', Season 3, Ep. #21, 11/12/2012, ©NBC

The Voice, from left: Blake Shelton, Christina Aguilera, Carson Daly, Cee-Lo Green, Adam Levine, 'Live Results Show', Season 3, Ep. #22, 11/13/2012, ©NBC

The Voice, from left: Blake Shelton, Christina Aguilera, Carson Daly, Melanie Martinez, Adam Levine, 'Live Results Show', Season 3, Ep. #22, 11/13/2012, ©NBC

The Voice, Cee-Lo Green (L), Christina Aguilera (R), 'Live Results Show', Season 3, Ep. #22, 11/13/2012, ©NBC

The Voice, Christina Aguilera (L), Cee-Lo Green (R), 'Live Results Show', Season 3, Ep. #22, 11/13/2012, ©NBC

The Voice, Christina Aguilera, 'Live Results Show', Season 3, Ep. #22, 11/13/2012, ©NBC

The Voice, Cee-Lo Green (L), Christina Aguilera (R), 'Live Results Show', Season 3, Ep. #22, 11/13/2012, ©NBC

The Voice, Dez Duron (L), Christina Aguilera (R), 'Live Results Show', Season 3, Ep. #24, 11/20/2012, ©NBC

The Voice, Christina Aguilera (L), Dez Duron (R), 'Live Results Show', Season 3, Ep. #24, 11/20/2012, ©NBC

The Voice, Dez Duron (L), Christina Aguilera (R), 'Live Results Show', Season 3, Ep. #24, 11/20/2012, ©NBC

The Voice, Christina Aguilera (L), Dez Duron (R), 'Live Results Show', Season 3, Ep. #24, 11/20/2012, ©NBC

The Voice, Christina Aguilera (L), Carson Daly (R), 'Live Semi-Final Performances', Season 2, Ep. #18, 04/30/2012, ©NBC

The Voice, Christina Aguilera (L), Chris Mann (C), Carson Daly (R), 'Live Semi-Final Performances', Season 2, Ep. #18, 04/30/2012, ©NBC

The Voice, Christina Aguilera (L), Carson Daly (R), 'Live Semi-Final Eliminations', Season 2, Ep. #19, 05/01/2012, ©NBC

The Voice, from left: Cee-Lo Green, Adam Levine, Christina Aguilera, Blake Shelton, 'Live Final Performances', Season 2, Ep. #20, 05/07/2012, ©NBC

The Voice, from left: Blake Shelton, Jermaine Paul, Christina Aguilera, Chris Mann, Carson Daly, Juliet Simms, Cee-Lo Green, Tony Lucca, Adam Levine, 'Live Final Performances', Season 2, Ep. #20, 05/07/2012, ©NBC

The Voice, Chris Mann (L), Christina Aguilera (R), 'Live Final Performances', Season 2, Ep. #20, 05/07/2012, ©NBC

The Voice, from left: Blake Shelton, Christina Aguilera, Cee-Lo Green, Adam Levine, 'Blind Auditions Continued', Season 3, Ep. #6, 09/24/2012, ©NBC

The Voice, Christina Aguilera (L), Cee-Lo Green (C), Adam Levine (R), 'Blind Auditions Continued', Season 3, Ep. #6, 09/24/2012, ©NBC

The Voice, from left: Christina Aguilera, Ryan Jirovec, Cee-Lo Green, Adam Levine, 'Blind Auditions Continued', Season 3, Ep. #6, 09/24/2012, ©NBC

The Voice, Blake Shelton (L), Christina Aguilera (C), Cee-Lo Green (R), 'Blind Auditions Continued', Season 3, Ep. #6, 09/24/2012, ©NBC

The Voice, Christina Aguilera (L), Cee-Lo Green (C), Adam Levine (R), 'Blind Auditions Continued', Season 3, Ep. #6, 09/24/2012, ©NBC

The Voice, from left: Blake Shelton, Christina Aguilera, Cee-Lo Green, Adam Levine, 'Blind Auditions Continued', Season 3, Ep. #6, 09/24/2012, ©NBC

The Voice, from left: Adam Levine, Cee-Lo Green, Christina Aguilera, Blake Shelton, 'Live Top 8 Performances', Season 3, Ep. #25, 11/26/2012, ©NBC

The Voice, from left: Adam Levine, Cee-Lo Green, Christina Aguilera, Blake Shelton, 'Live Top 6 Performances', Season 3, Ep. #27, 12/03/2012, ©NBC

The Voice, Christina Aguilera (L), Carson Daly (R), 'Live Results: 4 Go Home', Season 2, Ep. #11, 04/03/2012, ©NBC

The Voice, Cee-Lo Green (L), Christina Aguilera (R), 'The Live Performance, Week 2', Season 2, Ep. #12, 04/09/2012, ©NBC

The Voice, Christina Aguilera (L), Chris Mann (R), 'Live Performance, Quarterfinals', Season 2, Ep. #14, 04/16/2012, ©NBC

The Voice, Christina Aguilera, 'Live Performance, Quarterfinals', Season 2, Ep. #14, 04/16/2012, ©NBC

The Voice, Christina Aguilera, 'Live Finale', Season 4, Ep. #28, 06/18/2013, ©NBC

The Voice, Christina Aguilera, 'The Blind Auditions, Part 1', Season 2, Ep. #1, 02/05/2012, ©NBC

The Voice, Blake Shelton (L), Christina Aguilera (R), 'The Blind Auditions, Part 1', Season 2, Ep. #1, 02/05/2012, ©NBC

The Voice, Christina Aguilera, 'The Blind Auditions, Part 1', Season 2, Ep. #1, 02/05/2012, ©NBC

The Voice, Blake Shelton (L), Christina Aguilera (R), 'The Blind Auditions, Part 1', Season 2, Ep. #1, 02/05/2012, ©NBC

The Voice, from left: Carson Daly, Christina Aguilera, Blake Shelton, Cee-Lo Green, Adam Levine, 'Season 3', 09/10/2012, ©NBC

The Voice, from left: Adam Levine, Cee-Lo Green, Christina Aguilera, Blake Shelton, 'Live Top 10 Performances', Season 4, Ep. #19, 05/20/2013, ©NBC

The Voice, Cee-Lo Green (L), Christina Aguilera (R), 'Live Top 10 Performances', Season 4, Ep. #19, 05/20/2013, ©NBC

The Voice, Christina Aguilera, 'Live Top 10 Performances', Season 4, Ep. #19, 05/20/2013, ©NBC

The Voice, Christina Aguilera, 'Blind Auditions, Part 1', Season 1, Ep. #1, 04/26/2011, ©NBC

The Voice, Christina Aguilera, 'The Battles, Part 1', Season 1, Ep. #3, 05/10/2011, ©NBC

The Voice, from left: Cee-Lo Green, Monica, Christina Aguilera, Adam Levine, 'The Battles, Part 4', Season 1, Ep. #6, 05/31/2011, ©NBC

The Voice, Christina Aguilera, 'The Battles, Part 4', Season 1, Ep. #6, 05/31/2011, ©NBC

The Voice, from left: Cee-Lo Green, Adam Levine, Christina Aguilera, Blake Shelton, 'Live Show, Quarter-Finals 1', Season 1, Ep. #7, 06/07/2011, ©NBC

The Voice, Christina Aguilera (L), Carson Daly (R), 'Season 2', 02/05/2012, ©NBC

The Voice, from left: Adam Levine, Cee-Lo Green, Christina Aguilera, Blake Shelton, 'Season 3', 09/10/2012, ©NBC

The Voice, from left: Trevin Hunte, Cassadee Pope, Terry McDermott, Blake Shelton, Christina Aguilera, Cee-Lo Green, Carson Daly, Nicholas David, 'Live Final Performances', Season 3, Ep. #31, 12/17/2012, ©NBC

The Voice, from left: Cassadee Pope, Christina Milian, Christina Aguilera, Carson Daly, 'Live Finale', Season 3, Ep. #32, 12/18/2012, ©NBC

The Voice, from left: Blake Shelton, Christina Aguilera, Cee-Lo Green, Adam Levine, 'Live Finale', Season 3, Ep. #32, 12/18/2012, ©NBC

The Voice, Beverly McClellan (L), Christina Aguilera (R), 'Live Show, Quarter-Finals 1', Season 1, Ep. #7, 06/07/2011, ©NBC

The Voice, Christina Aguilera (L), Beverly McClellan (R), 'Live Show, Quarter-Finals 1', Season 1, Ep. #7, 06/07/2011, ©NBC

The Voice, Beverly McClellan (L), Christina Aguilera (C), Carson Daly (R), 'Live Show, Quarter-Finals 2', Season 1, Ep. #8, 06/14/2011, ©NBC

The Voice, Adam Levine (L), Christina Aguilera (R), 'The Semi-Finals', Season 1, Ep. #9, 06/21/2011, ©NBC

The Voice, Beverly McClellan (L), Christina Aguilera (R), 'The Finals', Season 1, Ep. #11, 06/28/2011, ©NBC

The Voice, from left: Blake Shelton, Christina Aguilera, Adam Levine, Cee-Lo Green, 'The Finals', Season 1, Ep. #11, 06/28/2011, ©NBC

The Voice, Cee-Lo Green (L), Christina Aguilera (R), 'Season 2', 02/05/2012, ©NBC

The Voice, Christina Aguilera (L), Blake Shelton (R), 'Season 2', 02/05/2012, ©NBC

The Voice, Christina Aguilera, 'Season 2', 02/05/2012, ©NBC

The Voice, Blake Shelton (L), Christina Aguilera (R), 'Season 2', 02/05/2012, ©NBC

The Voice, Christina Aguilera, 'Season 2', 02/05/2012, ©NBC

The Voice, Christina Aguilera (L), Blake Shelton (R), 'Season 2', 02/05/2012, ©NBC

The Voice, Christina Aguilera (L), Ne-Yo (R), 'Season 2', 02/05/2012, ©NBC

The Voice, Christina Aguilera (L), Blake Shelton (R), 'Season 2', 02/05/2012, ©NBC

The Voice, Christina Aguilera (L), Ne-Yo (R), 'Season 2', 02/05/2012, ©NBC

The Voice, Adam Levine (L), Christina Aguilera (R), 'Season 2', 02/05/2012, ©NBC

The Voice, Christina Aguilera (L), Billie Joe Armstrong (R), 'Season 3', 09/10/2012, ©NBC

The Voice, from left: Blake Shelton, Christina Aguilera, Cee-Lo Green, Adam Levine, Nicholas David, 'Live Final Performances', Season 3, Ep. #31, 12/17/2012, ©NBC

The Voice, from left: Blake Shelton, Christina Aguilera, Amanda Brown, Cee-Lo Green, Adam Levine, Carson Daly, 'Live Final Performances', Season 3, Ep. #31, 12/17/2012, ©NBC

The Voice, from left: Blake Shelton, Christina Aguilera, Amanda Brown, Cee-Lo Green, Adam Levine, 'Live Final Performances', Season 3, Ep. #31, 12/17/2012, ©NBC

The Voice, from left: Cee-Lo Green, Christina Aguilera, Adam Levine, Blake Shelton, 'Blind Auditions, Part 1', Season 1, Ep. #1, 04/26/2011, ©NBC

The Voice, Christina Aguilera (L), Billie Joe Armstrong (R), 'Season 3', 09/10/2012, ©NBC

The Voice, from left: Adam Levine, Cee-Lo Green, Christina Aguilera, Blake Shelton, 'Season 3', 09/10/2012, ©NBC

The Voice, Christina Aguilera, 'Season 3', 09/10/2012, ©NBC

The Voice, Cee-Lo Green (L), Christina Aguilera (R), 'Season 3', 09/10/2012, ©NBC

The Voice, from left: Adam Levine, Cee-Lo Green, Christina Aguilera, Blake Shelton, 'Season 3', 09/10/2012, ©NBC

The Voice, Cee-Lo Green (L), Christina Aguilera (R), 'Season 3', 09/10/2012, ©NBC

The Voice, from left: Blake Shelton, Christina Aguilera, Carson Daly, Melanie Martinez, Adam Levine, 'Season 3', 09/10/2012, ©NBC

The Voice, Christina Aguilera, 'Season 3', 09/10/2012, ©NBC

The Voice, from left: Blake Shelton, Christina Aguilera, Cassadee Pope, Carson Daly, Adam Levine, 'Season 3', 09/10/2012, ©NBC

The Voice, Christina Aguilera (L), Cee-Lo Green (R), 'Season 3', 09/10/2012, ©NBC