Britney Spears' Underwear Party

If the latest gossip on Britney Spears is true - the comeback kid has been revisiting her pre-rehab days. The latest reports indicate that Brit stripped to her underwear this past Saturday night while partying at Teddy's, downing booze throughout the evening.

According Page Six reports, Spears was seated in the back corner with friends during a party thrown by West Coast promotion group Alliance, with her bodyguards blocking off their designated area.

"They were jumping around on the couches. And Britney was in her underwear," one eyewitness told the NY Post, adding, "When a waiter approached the table he was told, 'No boys . . . no boys . . . you have to leave.'"

While Britney refused to order an alcoholic beverage when a waitress offered to serve her one, saying, "No, I'm just having Red Bull," it has been insinuated that - like Lindsay Lohan - she used her friends as proxies to get the drinks.

After a day of recuperation, Britney was once again at Millenium dance studio in Universal City for practice on Monday.

According to the Orlando Sentinel, "On arrival there, her blonde wig almost slipped off. Britney grabbed at it in embarrassment, much to her friends amusement. However, she inadvertently revealed the fresh crop of brunette hair underneath, almost three inches long now."

Britney, who was wearing a very short gold dress, white heels and a doo-rag, was also said to be showing off a nipple piercing on her left breast.

Enjoy the pictures of Britney at Millenium on Monday (May 14)!