10. Her first starring role was in Peace, Love & Misunderstanding.

While the movie is still set for a wider release, Olsen has already received praise after the indie comedy's opening at the Toronto Film Festival. She plays the daughter of a stressed-out NYC lawyer who takes her kids to visit their hippie grandmother after she's served divorce papers. Director Bruce Beresford applauded her performance. "She has this rare knack, she listens wonderfully," he told the New York Times.