Audrey Hepburn as Melissa Walter

Ray Ventura as Self

Henri Génès as Julien

Georges Lannes as Detective / Radio boss

Philippe Lemaire as Jacques

Danielle Godet as Jacqueline

John van Dreelen as Rudy Walter

Marcel Dalio as Poulos, imprésario

Suzanne Guémard as Mrs. Chatenay-Maillard

Nicole Jonesco as Germaine Dubois

Jackie Sardou as Mrs. Bindinelli

André Luguet as Chatenay-Maillard

André Dalibert as Brigadier

Alain Bouvette as Friend of Marinette

Michel André as Announcer

Gérard Buhr as

Lucien Callamand as Doorman

René Bourbon as Festival director

Geneviève Morel as Neighbor

Nicolas Amato as Controller

Marcel Meral as Controller

Max Elloy as Max Elloy

Jeannette Batti as Marinette

Y. Orrigo as Johnny Walter, Melissa and Rudy's baby

Edmond Audran as (uncredited)

Daniel Cauchy as Fan of Melissa (uncredited)

Raoul Curet as Member of the "Quat' Jeudis" (uncredited)

André Fuma as Member of the "Quat' Jeudis" (uncredited)

Roger Lagier as Member of the "Quat' Jeudis" (uncredited)

Jules Munshin as Bullfighter in Musical Melange with Antoine (cameo) (uncredited)

Primerose Perret as Baby goods saleswoman (uncredited)

Germaine Reuver as Concierge (uncredited)

Charles Verstraete as Musician in Ray Ventura's orchestra (uncredited)

Jeanne Véniat as Marinette's mother (uncredited)