Nick Jonas strips to his underwear on Running Wild With Bear Grylls

The episode which aired on Monday night showed the 23-year-old pop star bravely crossing a frozen lake - but not before stripping down to his boxer-briefs.

Nick Jonas strips down on 'Running Wild with Bear Grylls

my new plaid pants: Armie Au Naturel

Watch Nick Jonas Strip Down to His Underwear to Cross Ice-Cold Lake on 'Running Wild With Bear Grylls

Nick Jonas Strips Down on 'Running Wild with Bear Grylls' – Watch Now!, Nick Jonas, Television

Bear Grylls & Nick Jonas Tackle The Wilderness And Tread Water In Their Undies. • Instinct Magazine

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

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

Nick Jonas strips to his underwear on Running Wild With Bear Grylls

Nick Jonas Strips To Underwear For Ice-Cold Dip With Bear Grylls, News

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