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Back again at Millennium dance studio, Britney is workin' it on out on the dance floor! After a quick stop (these pix coming later) to tan at Epitome at Glen Center (where X17 had a fateful run-in with our favorite pop star on Friday), Britney was back in the studio, legwarmers and all. An inside source tells X17 that Brit isn't rehearsing for an upcoming performance, but just getting into shape and getting her groove back. She danced for about 45 minutes today, with a few other people. Our source says she sometimes drops her wig so she can fully work it out, but that when she does so, she's usually got a hat on.

Today, Britney look hot in black and the paps were out in full force to get shots like these of Britney looking sexy!