Olivia Wilde nude (Topless! HD!) in a classic sex scene from Alpha Dog.

Britney Spears nude (Upskirt! No Panties! Shaved! Vagina! Ass!) in classic paparazzi crotch shots.

Alexis Dziena nude (Full Frontal! HD!) in a classic scene from Broken Flowers.

Natalie Portman nude (HD! Ass!) in a classic scene from Hotel Chevalier.

Malin Akerman nude (Topless! HD!) in a classic scene from Harold and Kumar Go to White Castle.

Jessica Biel nude in a classic scene from Powder Blue.

Angelina Jolie nude (Topless! HD!) in a classic sex scene from Original Sin. See more Angelina Jolie nude scenes here.

Nicole Kidman nude (Topless! Ass!) in a classic sex scene from Eyes Wide Shut.

Ryan Gosling going down on Michelle Williams in asex scene from Blue Valentine. This is the scene that almost earned the movie an NC-17 rating.

Phoebe Cates nude (Topless! HD!) in a classic sex scene from Fast Times at Ridgemont High.

Actress and former Guess? model Diora Baird nude in a classic gallery from Playboy.

Rachel McAdams nude (Topless! Skinny Dipping! HD!) in a classic scene from My Name is Tanino.

Amber Heard nude (Topless! Threesome!) in various sex scenes from The Informers.