Jane Russell

as Bonnie Jones / Mimi Jones

Jeanne Crain

as Connie Jones / Mitzi Jones

Alan Young

as Charlie Biddle / Mrs. Biddle / Mr. Henry Biddle

Scott Brady

as David Action

Guy Middleton

as Earl of Wickenware

Eric Pohlmann

as M. Ballard

Rudy Vallee

as Rudy Vallee

Gwen Verdon

as Specialty Dancer (uncredited)