Will Smith, Brad Pitt and Britney Spears will be among the stars at Nickelodeon’s Kids Choice Awards.Lineup will include Michelle Pfeiffer and Sylvester Stallone as well as Frankie Muniz, Hilary Duff and Amanda Bynes, all familiar to the younger set. Event honors kid favorites in TV, movies, music and sports. This year’s interactive show will require stars to compete against their virtual-reality nemeses. Justin Timberlake and B2K are expected to perform. Tony Hawk will attempt a world-record skateboarding slime jump, which will land him in a tank of the cabler’s trademark goo. Event takes place April 12 at Santa Monica’s Barker Hangar. Rosie O’Donnell returns as host of event, which will be broadcast live.