VMA chiefs 'worry about Britney'

MTV Video Music Award chiefs fear that Britney Spears will ask to perform at this year's ceremony, according to a report.

The pop star has landed a nomination in the Best Female Video category for 'Piece Of Me', but bosses are not keen for her to sing following her disastrous performance at the 2007 event.

A source told The Mirror: "They are going to leave it up until the week before to decide. But they can only advise her - Brit will do her own thing."

Last month, MTV Networks Music Group president Van Toffler refused to confirm whether Spears will be given another chance to sing.