Shawn Mendes celebrated Christmas by immersing himself fully into the bracing wintertime chill of the holiday season.The 24-year-old singing star treated his fans to a video of himself in snowy climes, stripping down to nothing but a tiny pair of black boxers.Showing off his chiseled physique for the camera, he then clambered into a stream and lay in the frigid water for the 'polar bear plunge.' Smoldering sensation: Shawn Mendes celebrated Christmas by immersing himself fully into the bracing wintertime chill of the holiday season Shawn apparently had not apprised some of his friends of his plans ahead of time, as one of them could be heard expressing her amazement.From behind the camera, a woman in the group marveled: 'What are you doing?' as Shawn got undressed ahead of his plunge.
Even he evidently needed a moment to steel himself, as he paused and drew a deep breath before tearing off his sweater and removing his boots.He then ventured into the water and shouted: 'Whoo!
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