Actress: Alyssa Milano
Undead In: Embrace of the Vampire
Now, I know what all you vampire movie buffs will cry "But she doesn't actually become a vampire in that movie!"...but people, I humbly submit to you: who cares? Alyssa Milano spends near of this entire movie topless, and hooking up with one vampire or another, and that's all that matters.
Plus, she's the re-incarnation of a Transylvanian Princess. Or something. Who cares? Look at what happens in this movie. (NSFW)
