Check out this compilation video of the different scenes slowed down of Brit Brit's alleged dance double during the Till The World Ends music video shoot, who is said to be choreographer's assistant Tiana Brown (above)!
It's pretty fast shots, and her face is always sort of obscured…so it's hard to really tell what exactly's going on!
That being said, these are quick shots interspersed throughout the video, all very minor - so if it IS in fact someone else - who the eff cares? It still looks as though Brit Brit did most of the dancing herself!
It's not like they're trying to make it look like she was dancing like she used to, when there's none of that in the video.