Jacques Pills as Jean Sestrières, nephew of the Professor

Luce Feyrer as Lola Bonheur, a star

Armand Bernard as Monsieur Calchas, private detective

Danielle Godet as Monique Calchas, his daughter

Robert Pizani as Self

Michel Salina as

Paul Demange as Stanislas, the professor's assistant

Al Cabrol as Self, as a wrestler

Robert Seller as Professor Sestrières

Betty Spell as Self

Michel Dancourt as Flower deliveryman

Max Dalban as

Jacques Josselin as Menotti, gang boss

Roland Avellis as

Jean Pignol as

Hennery as

Jean Davan as

Maurice Lagrenée as

Edouard Servaes as

Rivers Cadet as Auguste, swiss waiter

Émile Riandreys as Oscar, alcoolic deliveryman

Andrès as A waiter in Piaf's cabaret

Lina Bori as

Yvette Beaumont as

France Dhélia as

Madeleine Bart as

Andréa Parisy as A presentator of "Boum" perfume

Jacques Angelvin as Self

Aimé Barelli as Self

Charles Boyer as Self

Martine Carol as Self

Gary Cooper as Self

Annie Cordy as Self

Nicole Courcel as Self

Lucienne Delyle as Self

Jacqueline François as Self

André Gabriello as Self

Juliette Gréco as Self

Christian-Jaque as Self

Philippe Lemaire as Self

Gina Lollobrigida as Self

Jean Marais as Self

Philippe Mareuil as Self

Mick Micheyl as Self

Marcel Mouloudji as Self

Jean Nohain as Self

Gisèle Pascal as Self

Gregory Peck as Self

Édith Piaf as Self

Les Quatre Barbus as Self

Rellys as Self

Line Renaud as Self

Pierre Stéphen as Self

Charles Trenet as Self