I've been enjoying this film for a decade and just figured out we only see Nadja naked from behind. She only takes her top off for the skinnydip. There is another girl who doesn't undress at all nor go in the water and I think I know why. They have pubic hair and the director didn't want them to ...

It's also at https://ok.ru/video/48179841608 - sure I could watch the scene and try to ascertain which of the unnamed characters are the two lucky ones but if someone knows or can identify them by all means

https://www.imdb.com/title/tt1290135/

Any idea who are the couple of actors who get freaky in the church and their ages?