Britney Spears can't help but take her clothes off

'Toxic' singer Britney Spears can't help but take her clothes off reports Sun UK.

The mum of two looked sexy as she stripped down to her skimpy black undies at a pool party in the Raleigh Hotel in Miami.

.An onlooker said: "Britney looked like she was having a great time. All her dance classes seem to be paying off."

Britney Spears later had a dip in the pool at 1am before heading out to a party at a nearby club.

Meanwhile, Perez Hilton reports that after Britney's concert at Mansion in Miami Beach the DJ in a cruel twist played Justin Timberlake's new song, Summer Love, the minute she walked off stage.

Around 2:30 A.M. Spears went back to Mansion with her five back up dancers in a red dress..

She left after about 15 minutes, and headed over to SET, where she and her dancers took over the VIP "Trophy Room," which has a huge glass window.

Spears the reportedly put in a "special request" for one of the promoters to introduce her to a buxom brunette female she saw below in the crowd through the glass.

The busty brunette was prepared to go upstairs and meet Britney Spears but she wanted to bring an entourage, which gave everyone cold feet so it didn't happen.

In other news, Britney Spears had an emergency vitamin injection before her concert at
Miami's Mansion club on Sunday night (20.05.07).

The 'Toxic' singer had a desperate craving for a shot of vitamins before
performing to the sell-out crowd, and managed to find a doctor to administer
the injection just in time.

A source told the New York Daily News newspaper: "She was calling around for
a doctor to give her a B-12 shot. A doctor shot her up before her show."
Britney's representative said: "If she did get the injection, I wouldn't be
surprised. The vitamins keep your energy going."