Kristy Swanson, nude for Playboy

Vera Farmiga in Up in the air

Rebecca Gayheart, nude in paparazzi shots and sextape

Leighton Meester, gossip girl, stolen photos, nude

Lauren Cohan, the Walking Dead, nude

[edit]: There is a new post on Lauren Cohan with more recent footage:Lauren Cohan topless in the Walking Dead

Rya Kihlstedt, Dexter, nude in She-creature

Melissa George, Greys anatomy, nude

Keira Knightley, nude in a dangerous method

Kristin Davis, Sex and the City, nude in stolen photos

Blake Lively, stolen photos, nude