LOOK: JUSTIN BIEBER STRIPS DOWN FOR NEW CALVIN KLEIN AD (3 PHOTOS)

Believe it! Justin Bieber is now the newest Calvin Klein model.

On their tweets, Both Justin Bieber and Calvin Klein shared the photos of his modelling gig.

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In September 2014, Justin Bieber had a pants-dropping incident at the Fashion Rocks Concert where he stripped down to his Calvin Klein underwear alongside model Lara Stone, who is also featured in the new CK ad campaign.