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10 November 2011, 17:22
Marvin, Aston, JB and Oritse spar for magazine cover.
JLS have fought with each other in the boxing ring – but don't worry, it's only for the new issue of Look magazine.
Marvin and Oritse go head-to-head in a sparring session on the cover of the magazine, while bandmates Aston and JB look on from outside the ropes.
In an accompanying interview, the boys admitted that they were as competitive in real life as they are when they're pretending to fight in the ring.
"Yeah, go hard or go home! Whatever we do we all want to win," JB said.
Oritse added: "We're most competitive playing computer games on the tour bus. It's hard core!"
JLS release their new album 'Jukebox' on 14th November.
The album features the band's brand new single 'Take A Chance On Me', which is due out on Sunday (6th November).