New Moon Star Christian Serratos Strips for PETA.

If you're anywhere in the vicinity of tween girls this week, you know there's only one thing on their minds: this weekend's premiere of New Moon, the second installment in the Twilight saga. But since teen-oriented vampire movies tend to prefer eating flesh over baring it, Mr. Skin isn't too invested in the franchise.

Twilight's suddenly uber-famous stars, however, are well worth noticing. Series stand-out Kristen Stewart has yet to go nude, but we saw vampy Ashley Greene nude in some leaked photos a few months back. Now Christian Serratos, who plays Kristen's pal Angela, is proving that mortals can be just as sexy as those lusty vampires in a nude PETA ad. Just ask Anna Paquin.