Well, the build up to this one wasn't nearly as big as for 'Hold It Against Me', but here it is, the new video for Brit's second single from new album 'Femme Fatale'.

The clip premiered on britneyspears.com last night and is set in a dystopian future (December 21st 2012 - the end of the world, according to Mayan prophecy) and sees the pop princess "dancing till the world ends", what else?