The singer arrived at a Los Angeles fitness centre yesterday wearing sexy low-slung jeans and five-inch heels. After a quick costume change, she jumped on the treadmill just in time for one of her biggest hits, Toxic, to play over the gymýs sound system.

"The diva that is miss Britney Spears just strolled into the gym I`m at in the most low-rise jeans ever and killer heels. So LA right now...! "Toxic" just came on the gym stereo. So now Britney is working out to her own music... (sic)," Peaches Geldof, daughter of Boomtown Rats rocker Sir Bob Geldof, wrote on her Twitter page.

Peaches was even more amazed when she turned around and saw Mark Walhberg using the weight machines behind her. She was thrilled to have stumbled upon a celebrity hang-out, and is already planning her next visit.

"What is this gym? A celebrity secret society?? Mark Wahlberg is pumping some serious iron here. His pants are hanging low Marky Mark style. I hope they play some classic 80s Wahlberg rap next... (sic)," she wrote.
sections: Celebrities