Justin Bieber has unveiled a remix for his hit track 'Boyfriend'.

The teen singer released the track as a single earlier this year and then followed it up with a video, which instantly became a YouTube smash.

Bieber has just unveiled a remix of the track, which features 2 Chainz, Mac Miller and Asher Roth.

The remix doesn't stray massively from the original, but it contains rap verses and the addition of a plunging bass drum hit.

As previously reported, Justin Bieber has recently announced a swathe of North American tour dates, which will cover 45 cities.

The dates start in September this year and will run right the way through to January 2013.

Listen to the remix of 'Boyfriend' below: