Watch: The Bullitts 'Supercool' ft. Rosario Dawson

London-based group The Bullitts, headed by Jeymes Samuel, have a viral hit on their hands. For the band's “Supercool” single, they have turned to Rosario Dawson for help with the video – and it's quite awesome.

You can see the entire 6-minute vid above.

Jeymes stars as a London bum who spots one of his Hollywood idols walking down the street: it's Rosario Dawson.

Obviously, he can't miss the opportunity to get an autograph – but the problem is that he doesn't have a pen.

So he finds another way of getting something to remind Rosario by: he asks for the camera to keep rolling, and he starts serenading her on “Supercool,” while executing some pretty wicked dance moves.

What's even cooler than the song is Rosario herself: just check her out.