Irwin Winkler Director, Producer Kevin Kline Cole Porter Actor Ashley Judd Linda Porter Actor Jonathan Pryce Gabe Actor Kevin R. McNally Gerald Murphy Actor Allan Corduner Monty Woolley Actor Sandra Nelson Sara Murphy Actor Keith Allen Irving Berlin Actor James Wilby Edward Thomas Actor Kevin McKidd Bobby Reed Actor Peter Polycarpou L.B. Mayer Actor Richard Dillane Bill Wrather Actor Edward Baker-Duly Boris Kochno Actor Natalie Cole Musical Performer - "Ev'ry Time You Say Goodbye" Actor Elvis Costello Musical Performer - "Let's Misbehave" Actor Sheryl Crow Musical Performer - "Begin the Beguine" Actor Alanis Morissette Musical Performer - "Let's Do It, Let's Fall In Love" Actor Caroline O'Connor Musical Performer - "Anything Goes" Actor Angie Hill Ellin Berlin Actor John Barrowman Jack , Musical Performer - "Night and Day" Actor Nicola Dawn Party Guest (uncredited) Actor Lara Fabian Musical Performer - "So In Love" Actor Vivian Green Musical Performer - "Love For Sale" Actor Mick Hucknall Musical Performer - "I Love You" Actor Lemar Musical Performer - "What Is This Thing Called Love?" Actor Diana Krall Musical Performer - "Just One of Those Things" Actor Robbie Williams Musical Performer - "It's De-Lovely" Actor Harry Ditson Dr. Moorhead Actor Tayler Hamilton Honoria Murphy Actor Lexie Peel Patrick Murphy Actor Greg Sheffield Boath Murphy Actor Peter Jessop Diaghilev Actor Jeff Harding Cody Actor Susannah Fellows Mrs. L.B. Mayer Actor Teddy Kempner Stage Manager Actor Francesca Jaynes Choreographer Actor Jay Cocks Screenwriter Stephen Endelman Producer, Music Arranger Rob Cowan Producer Charles Winkler Producer Gail Egan Executive Producer Simon Channing Williams Executive Producer Tony Pierce-Roberts Cinematographer Julie Monroe Film Editing Eve Stewart Production Design John Hill Art Director John Bush Set Decoration Janty Yates Costume Design Nina Gold Casting Georgina Lowe Line Producer Sarah Monzani Makeup Designer Simon Thompson Hair Designer