Don Ameche

Phil O'Neil (Credits) / Phil 'Mac' McNeil

Betty Grable

Kathryn 'Kay' Latimer, also called Miss Adams

Robert Cummings

Jeffrey 'Jeff' Boulton II

Jack Haley

Jack O'Hara

Carole Landis

Barbara Latimer, aka Miss Sears

Charlotte Greenwood

Aunt Susan 'Sue' Latimer

Cobina Wright

Connie Fentress

Lynne Roberts

Jennie May

Robert Conway

Mr. Lester

George Lessey

William 'Willie' Boulton

Jack Cole

Specialty Act

Robert Greig

Brearley, Boulton's Butler

Minor Watson

Mr. Jim Reynolds

Fortunio Bonanova

Mr. Pretto, the Hotel Manager

George Humbert

Texas Tommy Cafe Proprietor

Spencer Charters

Joe, the Postman

Gino Corrado

Boulton's Chef (uncredited)

Hermes Pan

Kay's Dance Partner in Conga Number (uncredited)