"Prototype dumb blonde Irma and her slacker, wheeler-dealer boyfriend Al interfere in the love life of Irma's level-headed room mate Jane."
Marie Wilson
as Irma Peterson
Diana Lynn
as Jane Stacy
Dean Martin
as Steve Laird
Jerry Lewis
as Seymour
John Lund
as Al
Don DeFore
as Richard Rhinelander
Hans Conried
as Prof. Kropotkin
Kathryn Givney
as Mrs. Rhinelander
Percy Helton
as Mr. Clyde
Gloria Gordon
as Mrs. O'Reilly
Ernö Verebes
as Mr. Ubang
Margaret Field
as Alice
Chester Conklin
as Gypsy Tea Room Waiter (uncredited)
Nick Cravat
as Mushie (uncredited)
Franklyn Farnum
as Maitre D' (uncredited)
Bess Flowers
as Gypsy Tea Room Diner (uncredited)
Hazel Boyne
Charles Coleman
as Henry
Jimmie Dundee
as Wallpaper Man (uncredited)
William Meader
as Customer (uncredited)
Walter Merill
as Newspaper Man (uncredited)
Howard M. Mitchell
as Man in Parking Lot (uncredited)
Jack Mulhall
as Radio Context Announcer (uncredited)
Francis Pierlot
as Taxman (uncredited)
Joey Ray
as Sam the Pet Shop Man (uncredited)
Dewey Robinson
as Truck Driver (uncredited)
Billy Snyder
as Butcher (uncredited)
Douglas Spencer
as Interior Decorator (uncredited)
Ray Stanley
as Minor Role (uncredited)
Ian Wolfe
as Minister (uncredited)
Chief Yowlachie
as Indian (uncredited)
Leonard B. Ingoldest
as Orchestra Leader (uncredited)
Ken Niles
as Radio Contest Announcer (uncredited)
Harold Miller
Sam Harris
George Marshall
Director
Cy Howard
Screenplay
Parke Levy
Hal B. Wallis
Producer
Associate Producer
Roy Webb
Original Music Composer
Leo Tover
Director of Photography
LeRoy Stone
Editor
Henry Bumstead
Art Direction
Hans Dreier
Sam Comer
Set Decoration
Grace Gregory
Edith Head
Costume Design
Charles Sickler
Grip
Gordon Jennings
Special Effects
Wally Westmore
Makeup Supervisor
Gene Merritt
Sound Recordist
Walter Oberst