Nick Jonas strips to his underwear on Running Wild With Bear

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 to His Underwear on 'Running Wild With Bear

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

Nick Jonas Finds A Bird in His Pants

Nick Jonas strips to his underwear on Running Wild With Bear

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

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

Nick Jonas strips down (to wade a frozen lake) on 'Running Wild

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Nick Jonas Is HOTT AF As He Strips Down To Cross A Freezing River

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

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

Sexy Nick Jonas in His Undies for Running Wild w/ Bear Grylls

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

Nick Jonas Finds A Bird in His Pants

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