Britney video leaked online

Britney Spears' new video has been leaked onto the Internet just days before its premiere in Britain.

The promo for Do Somethin' was co-directed by the pop superstar and features her playing air guitar in her underwear and driving a flying pink Hummer SUV.

Spears has told MTV News.com: "It's cute. I came up with all the choreography and styled the entire shoot myself using Juicy Couture clothing."

The full Europe-only video was slated to premiere in Britain tomorrow, but it started appearing online on Tuesday.