Willow Smith single

CHIP OFF THE OLD BLOCK: Willow Smith, the nine-year-old daughter of Will and Jada Pinkett Smith, appears to have a smash on her hands with her first single, “Whip My Hair,” on Jay-Z’s Roc Nation. The youngster also has her own clothing line. Over the summer, her brother Jaden starred in the remake of The Karate Kid. Mom and Dad have gotta be mighty proud of their kids—and their DNA. Here’s the track, along with a look at Willow. (9/13p)