She shows off her bod in behind-the-scenes photos as she preps for her Circus tour

By People Staff
Updated January 28, 2009 11:10 AM

Britney Spears‘s Circus topped the charts – with a lot of hard work – and now she’s promising to do the same in her upcoming world tour.

In an exclusive rehearsal photo posted to Spears’s Web site, Britney claps to the beat in simple, comfortable dance gear.

Jamie King, who choreographed her 2000 tour, is back on duty, and the singer, 27, looks svelte and toned in a tank top showing off her arms, and even the mom-of-two’s tummy!

The arena tour, her first in five years, kicks off in New Orleans March 3 with special guests The Pussycat Dolls.
– Jessica Gold Haralson