Tired new year's Spears

Britney Spears finally appears to be acting like a new mum. The pop princess, who recently made headlines for a rash of less-than-motherly hard partying, fell asleep in a Las Vegas nightclub shortly after leading the New Year's Eve countdown.

"By about 1am, she was just done, so we took her out," Spears' manager, Larry Rudolph, said.

"She was not drunk. She was just tired and falling asleep."

Rudolph denied reports that Spears, 25, collapsed shortly after midnight and was carried out by bodyguards.