HOTT JOINT: Little Mix - Word Up!

Little Mix have unveiled their new video for their Sport Relief single, Word Up.The band wrote on Twitter: "Here it is guys!!! Our video for our @sportrelief single #WordUp... Hope you love it." The vido is full to the brim with celebrity cameos including Mel C high kicking in her Spice Girls tracksuit, Nick Grimshaw on the rowing machine, Louis Spence doing the splits and Victoria Pendleton running a spin class.