Joan Davis
— Joan Mason
Jack Haley
— Jack Evans
Phillip Terry
— Tom McGrath
Martha Holliday
— Jill Martin
Ethel Smith
— Swing Organist
Margaret Hamilton
— Clarabelle Evans
Glenn Tryon
— George White
Jane Greer
— Billie Randall
Audrey Young
— Maxine Manner
Rose Murphy
— Hilda
Fritz Feld
— Montescu
Beverly Wills
— Joan as a Child
Gene Krupa
— Gene Krupa
Susanne Rosser
— Showgirl (uncredited)
Rusty Farrell
— Showgirl (uncredited)
Ginger Rogers
— Ginger Rogers (archive footage) (uncredited)
Cary Grant
— Cary Grant (archive footage) (uncredited)