Sweet Rosie O'Grady

Betty Grable

as Madeleine Marlowe/Rosie O'Grady

Robert Young

as Samuel Magee

Adolphe Menjou

as Tom Moran

Reginald Gardiner

as Charles, Duke of Trippenham

Virginia Grey

as Edna Van Dyke

Sig Ruman

as Joe Flugelman

Alan Dinehart

as Arthur Skinner

Hermes Pan

as Madge's Dancing Partner

Phil Regan

as Clark - Composer / Vocalist

Hobart Cavanaugh

as Clark

Frank Orth

as Taxi Driver

Jonathan Hale

as Mr. Fox

George Cockerill

as Singer

George Chandler

as Kelly - Reporter (uncredited)

Stanley Clements

as Danny (uncredited)

Bess Flowers

as Diner at Delmonico's (uncredited)

Byron Foulger

as Rimplemayer (uncredited)