The New York Post reports Britney Spears is busy juggling both Fred Durst and Justin Timberlake while partying at the Sundance Film Festival. During Saturday night’s Express/Project Greenlight party, Spears arrived with several girlfriends, p.r. people and a bodyguard in tow, when Durst snuck in minutes later. After the two left separately, they met up again at the Chrysler Lounge on Main Street, before ending up at a private lodge party in Deer Valley in the early morning. “Justin arrived yesterday and we aren’t sure if Britney has seen him yet, but she’s definitely been hanging with Fred,” a spy revealed.