Britney Spears just debuted her new music video for ‘Till the World Ends’ yesterday, and she is already fighting off speculation that she used a body double in the video.

You mean… it’s NOT Britney b#tch!?

Reportedly, choreographer and backup dancer Tiana Brown replaces Britney’s body in scenes of the video for the Ke$ha-penned dance hit, accusations that the Spears camp denies.

Brown danced on the road beside Britney on the ‘Circus Starring Britney Spears Tour’ and has worked with other dancing divas, including Christina Aguilera, the Pussycat Dolls, Jennifer Lopez and Fergie.

[read more about her here]

Initial reports claimed that Brown was the stand in, but there’s rumors of a total of three.

The superstar’s new album ‘Femme Fatale’ debuted on the Billboard 200 chart at No. 1 and sold 276,000 copies in its first week — making it Brit’s sixth No. 1 album.

Whether or not she solicited the help of a stand-in for the video, there’s no denying that this femme fatale is back on top where she belongs.