Even with parents like Will Smith and Jada Pinket Smith, Jaden, 12, and Willow, 10, were surprised that their early forays into acting (his turn in The Karate Kid) and singing (her ''Whip My Hair'' single) were so successful. ''I kind of knew that Willow was going to be big,'' says Jaden. ''But she took a little bit longer to realize that.''
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Image Credit: Alan Silfen
Taylor Swift, Kanye West, James Franco, Katy Perry, Jon Hamm, Jaden and Willow Smith -- see our list of the singers, actors, writers, and filmmakers who put their stamp on pop culture in 2010