The second single from her seventh studio album, 'Femme Fatale,' the video's 'Mad-Max' likeness surrounds Spears dancing with her entourage for one last last hoorah -- before the world ends. The apocalyptic setting for the video was created by Norwegian director Ray Kay, who has already worked with Justin Bieber, Lady Gaga and Beyonce.
In an interview for MTV's behind-the-scenes special on Spears, 'I Am The Femme Fatale,' the singer said that the video was not the most comfortable to shoot and was filmed in a "grimy and gross" warehouse. Despite Kay's less-than-pleasant conditions, Spears remained a trooper. "I feel like I've done so many videos, I'm at the point I want to enjoy myself," she said.
Spears even revealed that she replaced her sexy heels in one scene with Ugg boots, because her feet were killing her. "It wasn't a full-length shot, so a girl's [gotta be] about comfort," said Spears.
All of Spears' pain paid off. The full-length version of 'Till the World Ends' premieres tomorrow. In addition to the main video showing more apocalyptic footage, there's also a choreography version that will be released, which will show off more of Spears' dance moves.
Watch Britney Spears 'Till The World Ends' preview.