7. Mila Kunis
Mila Kunis is probably cooler than all the girls on this list (even more so than Kristen Bell or Natalie Portman). She's a Golden Globe-nominated pretty girl who makes her own cake, and who seems down for anything. No wonder we scooped her for a cover in 2008.
DECADE ACHIEVEMENT: Somewhere between That '70s Show and Black Swan, we fell in love.