| Gene Kelly | Jerry Mulligan |
| Leslie Caron | Lise Bouvier |
| Oscar Levant | Adam Cook |
| Georges Guétary | Henri Baurel |
| Nina Foch | Milo Roberts |
| Eugene Borden | Georges Matthieu (uncredited) |
| Martha Barnattre | Mathilde Mattieu (uncredited) |
| Ann Codee | Therese (cleaning lady) (uncredited) |
| George Davis | Milo's chauffeur (uncredited) |
| Hayden Rorke | Tommy Baldwin (Milo's friend) (uncredited) |
| Paul Maxey | John McDowd (theatre agent) (uncredited) |
| Dick Wessel | Ben Macrow (uncredited) |
Jerry Mulligan is an American ex-GI who stays in post-war Paris to become a painter, and falls for the gamine charms of Lise Bouvier . However, his paintings come to the attention of Milo Roberts, a rich American heiress, who is interested in more than just art.