First Movie: Age 9. Playing the precocious ballet-loving Peyton Kelly opposite Dwayne "The Rock" Johnson
in Disney's "The Game Plan
." Now 14, Pettis rocked the red (actually, make that orange) carpet at the 2012 Nickelodeon Kids' Choice Awards. Pettis has become a formidable vocal actress, lending her talents to "Jake and the Never Land Pirates" and "Beverly Hills Chihuahua 2."
Click ahead to see more former child stars grown up.