EXCLUSIVE Britney Spears pulls out of surprise MTV appearance
The superstar, who's just released new single Womanizer, was supposed to be doing a surprise performance at the prestigious awards bash.
‘Britney is gutted but she has family commitments,' a source tells Now Online.
'Due to the ongoing court case involving her sons, Britney has to remain in the US to show she’s available for her kids as often as possible, and she has to be around this week!’
All of the divas – Britney, Beyonce, Christina Aguilera and Leona Lewis released singles on Monday.