Sister Act

Oh, come on. Who hasn't indulged in some kind of forbidden fantasy or played dress-up for sexy time? 

This still comes from a film called Confessions of a Sinful Nun. It's a full-length movie, but with predictably minimal plot -- just enough to get you from one sex scene to another. And these are long sex scenes! Not that I'm complaining, mind. They were done well and quite kinky!