Ethel Merman as Molly Donahue

Marilyn Monroe as Vicky

Mitzi Gaynor as Katy Donahue

Dan Dailey as Terence Donahue

Donald O'Connor as Tim Donahue

Johnnie Ray as Steve Donahue

Richard Eastham as Lew Harris

Hugh O'Brian as Charles Gibbs

Frank McHugh as Eddie Dugan

Rhys Williams as Father Dineen

Lee Patrick as Marge

Eve Miller as Helen

Dorothy Abbott as Showgirl (uncredited)

Lyle Talbot as Stage Manager (uncredited)

George Chakiris as Dancer (uncredited)

John Doucette as Stage Manager (uncredited)

Alvy Moore as Katy's Date (uncredited)

Ron Nyman as Tattooed Sailor (uncredited)

Walter Winchell as Walter Winchell (voice) (uncredited)

Dorothy Adams as Nurse (uncredited)

Robin Raymond as Lillian Sawyer (uncredited)