CHLOE MORETZ, 13
Doesn't ruin: Let Me In (2010), Kick-Ass (2010)
Why they don't suck: Whether she's playing a young assassin denied a childhood or an isolated, self-loathing vampire, Moretz's eyes project sadness and longing like few others her age. But shit, we give her props just for not blowing every take laughing at Nic Cage's hairpiece in Kick-Ass.
Child version of: Julianne Moore