I saw this movie a long time ago on TV, and it made an indelible impression on me as a young girl. The gender bender plot was erotic and still works decades later. Veronique Deschamps in the title role is amazing. She was 24 at the time, yet she was able to project a boyish charm with subterranean female sensibility. It's a pity she didn't make more movies after 1960. It seems that she married the film's director, Jean Dreville, and stopped acting after the birth of their daughter in 1962. Anyway, I had searched for this movie for decades and was unable to find it, but thanks to Dailymotion, my search was over and this movie is now part of my personal collection.
Jean Dreville is one of the most underrated French directors. The plot is not extremely believable, but who cares! Cinema is about suspending disbelief and the way this movie is put together makes it an uniquely delicious flight of imagination. This movie is a gem.