Some people claim that Brit is using a double in some of her videos...

It seems unbelievable that Britney would use a double because we all know what a good dancer she is! But this video makes us wonder if she did in fact use someone else in some of the Till the World Ends scenes.

The double is Tiana Brown, a professional dancer who has worked with Christina Aguilera , Jennifer López and The Black Eyed Peas .

What do you think?

This double would explain why there is not much dancing in this video, something strange for a Britney vid…

Source: bambini