Kristen Stewart buttPre-teen girls love Kristen Stewart because she plays lovestruck teen Bella in the wildly popular Twilight saga. Adults love her because she's a long-legged tough girl with a scowl that's more sexy than angry. Although she gave us some chaste yet hot underwear shots in Twilight and Adventureland, and gave Dakota Fanning a girl-girl grope in The Runaways, Kristen hasn't run away with the idea of going really bad... yet.

Stewart is presently filming the movie adaptation of Jack Kerouac's beloved beat novel On the Road, due in theaters in 2011, and Life & Style magazine looked over the script reports: "Her character, 16-year-old Marylou, has a threesome with a couple of hotties, asks to watch two people have sex and brags about loving to perform oral sex."

Note that this is exactly the career path that skin fave Christina Ricci ricci black snake moanopted to take: spooky child actor to Hall of Fame nudity in one movie. Remember, Christina had been seen as the sweet girl from That Darn Cat! and The Addams Family, and after the racy The Opposite of Sex and her showstopping full frontal flash in Prozac Nation, she was seen as edgy, dangerous, and very sexy, going on to bare in Black Snake Moan, Monster, and After.Life.

Forget Team Jacob and Team Edward. Skin Central is on the side of Team Naked Kristen. Firmly.