Spears has photographed four times without underwear. She has vomited at a club. And her wild ways has taken a toll on her looks, causing the once fresh-faced beauty to break out in acne and look puffy, overweight and exhausted.

Spears, who was supposed to record tracks throughout November, December and this month, stopped going to studio sessions because it interfered with her late-night antics.

"Right now, she is trying to lay down some tracks, but no one is keen to move very quickly because there is the issue of how to market the album," an insider said. "Jive hasn't even picked producers for the album."

. "If she doesn't clean up her act - and soon - it is going to be a problem. The public has grown really tired of her antics and despite her and [manager Larry Rudolph] promising she would change, she hasn't," continued Page Six's source. "She has lost her core fan base of teen girls."

A rep for Spears says, "We are anticipating an album release second half of 2007. Jive is not worried about marketing the album, in fact we are looking forward to the release. We don't comment on our artists' personal lives."