This is a frothy light-as-a-soufflé French comedy caper that has any number of English-language titles ("The Seduction Squad", "The Powdwer Puff Gang", etc.), but the most appropriate one perhaps is the direct translation from French, "Too Pretty to Be Honest". The movie is about four very pretty female roommates (Jane Birkin, Emma Cohen, Bernadette LaFont, Elizabeth Weiner) who, while looking through their telescope, discover that a group of men in an adjacent flat are an international gang of bank robbers and art forgers. Instead of calling the cops, however, they come up with a hare-brained plan to rob the robbers--but being typically dim-witted 60's femmes, they're naturally much more likely to fall into bed with them in the end.
There's plenty of eye candy here, but regrettably it all stays pretty much in its wrappers. Of course, you can see Emma Cohen's impressive "T"s and Jane Birkin's delectable "A" in plenty of other movies, but their absence here results in the movie relying entirely on the comedic elements, which don't carry it very far, unfortunately (especially, with the typically crappy English dubbing). Of course, where Jane Birkin goes her frog-like pop Svengali husband Serg Gainsbourg is never too far behind. He has a small role here and may have had something to do with the catchy theme song.
This is just OK. I'd recommend the every similar Jane Birkin vehicle "Catherine and Co." instead.