Age: 10
Occupation: Singer
Previous TIME 100 appearances: 0
Will and Jada Pinkett Smith's two kids didn't take too long to gain their own fame. Their son, Jaden, 12, took the lead role in a reboot of The Karate Kid in 2010. Not to be outdone, younger sister Willow decided to become a pop star. And so she recorded "Whip My Hair," a fun, age-appropriate anthem about self-confidence and, well, whipping one's hair back and forth. The single took off, landing her a record deal with Jay-Z and a spot opening for Justin Bieber on tour. Not too bad for someone born in 2000.