A week ago she was spotted emerging from a cosmetic surgery clinic already showing signs of losing the pounds she had put on since splitting from her husband Kevin Federline last year.

A source told the American magazine Star: "Britney wants to look better than she ever has in her life. She has a plan and has already started working on it."

"She is a size 6 (UK size 10) and wants to be a size 2 (UK size 6) when she is done in three months."

She is said to have paid an hour-long visit to the LipoDissolve Center in Las Vegas, where she was reportedly tempted by the clinic's liposuction-like treatments for the face, legs, stomach and bottom.

Miss Spears, who has denied having liposuction, has also reportedly consulted a plastic surgeon about possible surgery.