Sigourney Weaver standing in a bathroom topless, showing her right breast first when she lays a towel over a rack and then talking to a guy for a while, her breasts not quite reflected in the mirror...

Diane Kruger - Troy

Elizabeth Olsen - Oldboy

Elizabeth Olsen - Martha Marcy May Marlene

Bai Ling showing her famous long, hard nipples as she has sex with a guy in bed, riding him for a while before climbing off and putting on a robe.

Alison Brie & Kiersey Clemons - Somebody I Used to Know