Dany Boon

Valentin Duquesne, aka Valentin D.

Line Renaud

Suzanne Duquesne, Valentin's mother

Laurence Arné

Constance Brandt, wife of Valentin

Valérie Bonneton

Louloute, Valentin's ex-fiancée

Guy Lecluyse

Gustave, Valentin's brother

François Berléand

Alexander, Constance's father

Pierre Richard

Joseph Duquesne, Valentine's father

Juliane Lepoureau

Britney

Stéphane Pezerat

Speech therapist

Aladin Reibel

Professor Rosenberg

Thomas VDB

Paparazzi

Judi Beecher

Kate Fischer

Antonia de Rendinger

Madame de Cléry

Ludovic Pinette

Alexander's lawyer

Silvie Laguna

Baroness

Yan Tual

Security agent

Claudia Tagbo

Minister of Culture

Nathalie Blanc

Journalist Palais de Tokyo

Jean-Pascal Abribat

Accounting

Karina Orr

Galerist

Vincent Primault

Professor Legard

Jeanfi Janssens

Tony

Hugues Boucher

Staid guest

Françoise Thuries

Lady

Jean-Noël Martin

Guest

Julie Schotsmans

Employee

Kad Merad

Kad Merad

Julia Vignali

Julia Vignali

Arthur

Arthur

Pascal Obispo

Pascal Obispo

Claire Chazal

Claire Chazal

Sandy Lobry

Employee (uncredited)