Britney Spears debuts sexy 'Slumber Party' video featuring Tinashe: Watch

Britney Spears said you ain't gonna sleep tonight. And she made sure of that by dropping the sexy new video for "Slumber Party" featuring Tinashein the small hours of Friday morning.

Brit fans will be happy they stayed up. The video, directed by Colin Tilley, is pure indulgence.

At the top of the clip, Brit steps out a classic car then enters a wild party at a mansion. She's spotted by the master of the house, a guy with what appears to be a David Bowie-esque lightning bolt on this face. And then dancing erupts.

See Britney's sexiest Instagrams of 2016:

Tinashe appears midway through the story dressed for the slumber party, and the pair get cuddly on a couch in negligee before instigating a sexy dance sequence.

"Slumber Party," a rebooted Glory track, premiered earlier in the week. The official video dropped at 3am ET. Watch it below.