Post Malone saddled up for a western-themed Skims ad, flaunting his ink-covered body while posing in his underwear and serving as the brand's newest face of the men's line. Malone, 30, stripped down to his boxers in new photos from Kim Kardashian's lifestyle brand released on Tuesday, August 19. Malone promoted the brand's new camouflage boxers, which also blended into his tattoos all over his chest, arms, neck and parts of his face. He tamed the briefs with a white cowboy hat while posing in the wilderness.