Nick Jonas Strips Down to Underwear on 'Running Wild With Bear

Nick Jonas Strips Down on 'Running Wild with Bear Grylls' – Watch

Nick Jonas strips to his underwear on Running Wild With Bear

Nick Jonas Bares All in 'Running Wild with Bear Grylls'

Nick Jonas strips to his underwear on Running Wild With Bear

Nick Jonas Bares All in 'Running Wild with Bear Grylls'

Nick Jonas Strips Down To His Calvins To Cross Freezing Cold Lake

Nick Jonas strips to his underwear to cross an ice-cold lake

Nick Jonas Strips Down to Underwear on 'Running Wild With Bear

Nick Jonas strips to his underwear on Running Wild With Bear

Bear Grylls & Nick Jonas Tackle The Wilderness And Tread Water In

Nick Jonas Just Jared: Celebrity Gossip and Breaking Entertainment

Nick Jonas strips down on 'Running Wild with Bear Grylls