VIDEO : Justin Bieber Show's Off His 'Junk' In New Calvin Klein Ad Campagin

There is one thing Justin Bieber never says sorry for: showing off his junk in underwear ads. The pop star and Calvin Klein model reveled the Spring 2016 ad, and it is definitely modern art. Just picture the Biebs breaking into an "I'll Show You" serenade. Bieber and his new mystery girl are perfectly synchronized, showing off their assets in a the photo Bieber shared on Twitter. The campaign also features some of his celeb squad, including Kendall Jenner.