Elle Fanning
Age: 13
What She's Done: Dakota's little sister had her first "big girl" part with Sofia Coppola's 'Somewhere'; appeared as the girl that all the neighborhood boys had crushes on in this past summer's 'Super 8.'
What's Next: Will star opposite Matt Damon in Cameron Crowe's family drama 'We Bought a Zoo' and appear as a ghost in Francis Ford Coppola's experimental mystery 'Twixt.' 
Did You Know?  She goes to the same high school the Olsen Twins attended.