In the director's cut, the Jynx and Todd sex scene is longer. He shows partial bare rear. Her towel slips several times showing her bare breasts. Also see most of her bare rear.
Review is from the 75 minute version. (A 77 minute directors cut supposed to exist.)
No nudity.
Izzy and Matt make out in a car, she removes her panties, he gives her oral sex, no nudity seen.
Bridgette showers, only bare upper back seen.
Jynx and Todd have sex, standing in a bathroom, he's clothed, she's wrapped in a towel. She takes a shower, but translucent shower curtain shows nothing.