Brit Rocked Cradle, Not With Sean

5/9/2008 9:55 AM PDT

Brit Rocked Cradle, Not With Sean

Britney Spears was a surprise guest at the finale of MTV's "Rock the Cradle" last night -- and we would have gotten a great interview with her about it ... if it weren't for power windows.


She didn't go on the show, she was just there to support her manager, Larry Rudolph, who is one of the judges.