Lewis Milestone Director Bing Crosby Billy Crocker Actor Ethel Merman Reno Sweeney Actor Charlie Ruggles Rev. Dr. Moon Actor Ida Lupino Hope Harcourt Actor Grace Bradley Bonnie LeTour Actor Arthur Treacher Sir Evelyn Oakleigh Actor Robert McWade Elisha J. Whitney Actor Richard Carle Bishop Dobson Actor Margaret Dumont Mrs. Wentworth Actor Jerry Tucker Junior Actor Edward Gargan Detective Actor Harry Wilson Plug Ugly (uncredited) Actor Matt McHugh Detective Actor Budd Fine Pug-Ugly Actor Guy Bolton Writer Russel Crouse Writer Howard Lindsay Writer P.G. Wodehouse Writer Benjamin Glazer Producer Karl Struss Cinematographer Eda Warren Film Editing Hoagy Carmichael Original Music Friedrich Hollaender Original Music Richard A. Whiting Original Music Victor Young Original Music Phil Boutelje Original Music John Leipold Original Music Hans Dreier Art Director Ernst Fegté Art Director A.E. Freudeman Set Decoration Travis Banton Costume Design