Blake Lively

This Gossip Girl has pulled off the young-actress hat trick by going from sexy teen to sexy woman, from successful TV star to movie star and from hot girl to hot cool girl (with her appearance in The Lonely Island's "I Just Had Sex"). At 24 years old, Blake Lively has already convinced us that snobby rich girls aren't all bad, looked great as a white-trash single mother in The Town and made us go see the Green Lantern, despite the bad reviews. She has both indie and big studio pictures coming up, so there's no telling what she'll do to us next.

 

  Lara Stone

With her strong cheekbones, cold stare and Dutch D-cups, Lara Stone is one of the world's foremost supermodels. But be warned: Clicking through this 28-year-old's various online photos may intimidate you. Her frozen expression and blond eyebrows will chill and excite you the way European art films do. But while Stone's appearance suggests "ice queen," her marriage to English comedian David Walliams proves she has a sense of humor and warm personality. We can definitely feel the heat.