Kelly Clarkson continued her string of incredible covers during a stop at L.A.'s Nokia Theater on Tuesday night with her soulful rendition of Britney Spears's "Till The World Ends." Follow the jump and take to the comments to let us know who it better, Instincters!

We've missed music videos playing on TV so much that we'll applaud their return to the small-screen even if we have difficulty memorizing choreography that is half-covered by animated trivia icons. That's how it goes with the return of Vh1's Pop-Up Video (which we were obviously too young to watch the first time around), which teases its comeback with a pop-up mock-up of Britney's "Till The World Ends." Follow the jump for a piece of history (as in the very first time our brain-power actually increases by watching a Britney video)!

A second music video highlighting the choreography for "Till The World Ends" has been released. But is Britney's dancing really something that should be highlighted?

A new video featuring slowed-down scenes from "Till The World Ends" claims to reveal that Britney utilized a body double during filming (and not a very convincing one, at that, if the clips from this "expose" are true). Watch and let us know if you think Britney's continuing body double controversy carries any weight (no pun intended). 

She might not have been able to dance to save her life on Good Morning America, but whether it's thanks to a Trenti frap, hoodoo, or the Pixar animation team on an overtime schedule, Britney Spears commands her thighs in fine form against the apocalypse in the "Till The World Ends" music video, which premiered this morning. Follow the jump to comment if you heart or hate it!

Femme Fatale, which critics across the board are touting as Britney's comeback album, is released today, and to celebrate, Brit Brit's Castro concert aired in all its edited glory this morning on Good Morning America. Follow the jump to watch.   

The Trenti fraps, Jack Daniels toothpaste and Day-Glo paint fumes were flowing freely in the studio the day music's classiest angels collaborated on the second single for the upcoming Femme Fatale. That's right, Britney Spears' new electro-fied track "Till The World Ends" was penned by Ke$ha (a collaboration that makes complete and utter cents sense) and despite its slated release date of Friday, March 11, the song has leaked.

With a better picture, err, earful of what many are touting as Britney's "comeback" sound forming as more music is released, do you think 2011 will be the year of the Spears? Follow the jump and let us know!