Naomi Watts reclined in a bath tub with her arms up on the edges before she startles and moves her arms down, giving us a brief peek of her right nipple slipping into view from under the water...

Sofia Kappel and Revika Anne Reustle - Pleasure http://www.imdb.com/name/nm9903838/

Alexandra Daddario - Lost Girls and Love Hotels http://www.imdb.com/name/nm1275259/

Gillian Anderson showing both breasts during a nude sex scene with a guy in bed, showing hard nipples while they have sex and while lying on her back afterward.

Amy Seimetz - Autoerotic http://www.imdb.com/name/nm1541272/ info not available

Christina Ricci - Prozac Nation