The daughter of Hollywood heavyweights Will_Smith and Jada_Pinkett_Smith, Willow Smith -- like her brother Jaden -- entered movies as a child star at the hands of her parents. Willow debuted with a role in the 2007 sci-fi thriller I_Am_Legend (starring her dad), then struck out on her own by signing for a part in the family-oriented comedy Kit_Kittredge:_An_American_Girl (2008).Nathan Southern, Rovi