Rumors are swirling that Britney Spears is checking out of Promises in Malibu two days early in order to attend her estranged husband Kevin Federline's 29th birthday party tonight. Like Britney, Kevin, and everything about their history, relationship, children, careers, and pets, the party is to be ultra classy: according to X17, Kevin is pimping rights to cover his bash for $25,000, a price that reportedly doesn't even include an exclusive interview with the man himself. Still, if Britney will be there, it sounds like a bargain: who knows what wig she will wear! Who can say??

Britney Spears Quits Rehab Early For Federline [EntertainmentWise via Cityrag]