Big Brother announced this afternoon that Bobby Sabel, Paddy Doherty, Darryn Lyons and Jedward member John Grimes would form a boyband and go head-to-head with a girlband made up of Kerry Katona, Amy Childs, Lucien Laviscount and Edward Grimes.
Both acts were told to rehearse a famous song and choreograph an accompanying dance routine for a music video. Both clips will then be released on the Big Brother website for the public to view and vote on.
The band that tops the poll at 9pm tomorrow will be receiving a "luxury" reward, while the losers will become 'groupies' and attend to their every need.
Watch housemates learn of the 'Big Brother Battle Of The Bands' below:
In preparation for the task, both groups were instructed to try and psyche each other out by pulling their best boyband and girlband poses on the living room sofas.
Afterwards, the boyband were called to film their music video in the garden, donning bandanas, leather jackets and skimpy trunks to kick around beach balls and douse their exposed torsos in whipped cream.
Watch the boyband film their music video below:
With the boys finished, the Big Brother girl band - named KELA after its members' first initials - were next to shoot their piece, which saw them smoulder into the camera, shower under watering cans and wail down telephones in the wake of a sexy pillow fight.
The full music videos will premiere on the official Celebrity Big Brother website shortly.
Watch the girl band film their music video below: