The pair join forces to sing a duet at the KROQ radio station's Christmas party...

GWEN STEFANI joined MOBY on stage in LOS ANGELES on Saturday (December 16) at the KROQ radio station’s ‘ALMOST ACOUSTIC CHRISTMAS’ gig.

The pair duetted on ‘South Side’, which was recorded in Los Angeles earlier this year and released as a single in Americalast month. They had previously performed it live together on MTV.

No Doubt’s set later in the night included an acoustic version of ‘Just A Girl’.

The gig, part of a two-night event at Universal Amphitheatre in Burbank, also featured performances by Weezer, Deftones and Papa Roach.

Moby plays shows at Dublin Point on December 29 and Edinburgh Castle on New Year’s Eve.