How You Know Her: At just 19—the do-or-die age when child actors either find big-screen success or fall off the radar completely (or take some "personal time," a.k.a. rehab)—Robb has already logged movie credits a mile long. She's played opposite A-listers like Johnny Depp (Charlie and the Chocolate Factory), Jeff Daniels (Because of Winn-Dixie), Hilary Swank (The Reaping), Val Kilmer (Have Dreams, Will Travel), and Charlize Theron (Sleepwalking) all before the age of legal intoxication.
What You Don't Know: Despite her massive fear of sharks, reefs, and oceanic accidents in general, Robb learned to surf for a recent role—in which she gets her arm bitten off by a shark. Her one piece of advice? Don't look down.
Where You'll See Her Next: Robb plays the main squeeze in The Way, Way Back (out in theaters July 5), which is already being hailed as the next Little Miss Sunshine. Best of all, she costars with Steve Carell, Amanda Peet, Toni Collette, and Maya Rudolph. Not bad company to keep in your teens.
—Dayna Clark. Follow her at @DaynaMichele.