10/11
Courtesy of Kimberley French/Summit Entertainment, Courtesy of Sci Fi Channel
Battlestar Galactica's Number Six (as portrayed by Tricia Helfer) is a type of Cylon who looks like a human. Sixes are known for being seductive, so it helps that they're drop-dead gorgeous (Helfer is a real-life model, FYI).
Though Twilight's Rosalie (Nikki Reed) is equally gorgeous, she isn't ususally one to seduce. She's standoffish at best, and an angry bitch at worst.