Cornelia Froboess as Cornelia "Conny" Haller

Rex Gildo as Billy Newman

Rudolf Vogel as John Newman

Susi Nicoletti as Diana Haller

Harald Juhnke as Dr. Berning

Ingrid Pan as Steffi Gutlieb

Elfie Pertramer as Erna Gutlieb

Angèle Durand as Lola

Elke Arendt as Lotte

Paul Bös as Tommy