Monte Carlo Baby is a 1951 comedy film co-directed by Jean Boyer and Lester Fuller.
It featured an early performance by Audrey Hepburn playing a spoiled actress.
In any event, this was the last movie Hepburn made before launching her Hollywood film career.
Monte Carlo Baby was produced in the English language, while a second version of the film was made in French.
Since Hepburn was fluent in French, she played the same role (although the character's name was changed).