Boy does Nick Jonas love to show off his abs.

Taking to the cover of Flaunt magazine's 'The Grind' issue, the singer gives his best pout as he tenses up and lets that six pack speak for itself.

Nick's new tough-guy image is all about him breaking away from the Jonas Brothers' squeaky clean look, as he prepares to release a solo-album and star in a gritty new TV series.

Playing a very beefy MMA fighter in Kingdom, Nickput on around 15 pounds in order to look the part for the role.

"I really wanted to look like an animal who internalizes a lot, but when he's in the cage and he's fighting that's when you see this kind of animalistic mentality that he has," he told E! recently.