Britney Spears is reportedly celebrating her much hyped comeback with a vow of celibacy.

The princess of pop - who is busy focusing on her career - is said to be so fed up with dating that she is pledging purity.

A source says, "Britney has always found it difficult not to have a man in her life but right now boyfriends are out of the question.

"She's concentrating on her career and getting back to where she once was.

"Although she would love to be in a relationship she's aware that it's the kind of blow that comes with being let down by a partner that has seen her lose it in the past.

"She won't make that mistake again."

Britney is fighting for the top spot on November 3 against her rivals Christina Aguilera, Beyonce and Leona Lewis.