Ainsi soient-elles (1995)
One brunette, one blonde, both slim and in their 20s. The poolside threesome starts with oral — the girls take turns working the guy while the other watches. The natural daylight makes everything look sharp, and the camera gets close enough to catch the details without feeling too intrusive. The action stays focused on the girls pleasuring him, no switching to other positions. It’s straightforward but gets the job done if you’re into outdoor threesomes with a voyeuristic feel.