Amanda Fuller removing her jean skirt and jean bustier to reveal her breasts and a pair of panties and then lying down on a bed with two naked guys while a third guy removes his clothes and...

Natalie Portman - Annihilation http://www.imdb.com/name/nm0000204/

Olivia Wilde undressing with a guy in a hotel room, showing her breasts and then climbing into bed with him. We see her topless as they talk, and then she goes under the sheets to go down on him...

Shannyn Sossamon of A Knight's Tale fame sitting topless on a couch blindfolded giving us a good look at her left breast as a guy leans down to kiss her neck and she reaches up behind his head.

Diane Kruger - Sky

Laura Linney - The Savages