Jean Harlow as Mona Leslie

William Powell as Ned Riley

Franchot Tone as Robert 'Bob' Harrison Jr.

May Robson as Mrs. Granny Leslie

Ted Healy as Smiley

Nat Pendleton as Blossom

Rosalind Russell as Josephine 'Jo' Mercer

Mickey Rooney as Eddie

Henry Stephenson as Colonel Harrison Sr.

Man Mountain Dean as Man Mountain Dean - Wrestler

Robert Light as Paul Mercer

Allan Jones as Allan

Carl Randall as Carl Randall

Louise Henry as Louise

James Ellison as Dale Every

Nina Mae McKinney as Nina Mae McKinney - Singer

Leon Ames as Ralph Watson

Allen 'Farina' Hoskins as Gold Dust

Wade Boteler as Policeman Re-arresting Mona (uncredited)

Don Brodie as Reporter (uncredited)

Margaret Dumont as Woman in Audience Yelling 'Get Off the Stage' (uncredited)

Paul Fix as Man on Mechanical Horse (uncredited)

John Gallaudet as Doorman at Poker Game (uncredited)

Henry Kolker as Mr. Gearhart (uncredited)

Charles Middleton as District Attorney (uncredited)

Edward Peil Sr. as Man Raising Stage Curtain (uncredited)

Kay Sutton as Woman with Paul in Audience (uncredited)

Akim Tamiroff as Chef at Wedding (uncredited)

Libby Taylor as Bertha - Mona's and Granny's Maid (uncredited)

Harold Huber as Nick Londos (uncredited)