After teasing fans with photos and previews from her video shoot for 'Till The World Ends', Britney Spears finally unveiled the full video late last night, April 6. 

This will be her second single from 'Femme Fatale' and the track, which was co-written by Ke$ha, is a dance-infused club banger with a great breakdown and an anthemic feel.

The video is very different to the one she released for 'Hold It Against Me' and instead Spears has gone for an apocalyptic theme and a look that takes her back almost to her 'Slave 4 U' style where the visuals are concerned.

Watch the fantastic video in full here: