Nothing gets between Justin Bieber and his Calvins - fans of the teen idol well know that by now. And now, the relationship between Calvin Klein underwear and the "Home to Mama" singer are official: Bieber is the latest face of the brand.

Today (Jan. 6), after months of speculation and saucy selfies from Bieber, the pop star and Calvin Klein have confirmed that Bieber will be showing off his abs, and more, for the next good while.

Calvin Klein first teased the official Bieber announcement earlier today, with quite the sexy Instagram video post. The video, which also stars model Lara Stone features Bieber's back to the camera as he plays the drums and later grabs himself a lady.

 Drum roll... #mycalvins

Un vídeo publicado por Calvin Klein (@calvinklein) el Ene 1, 2015 at 10:00 PST

Though the news of a partnership between Bieber and Calvin Klein jeans and underwear then seemed fully imminent, the big news came hours later with the unveiling of the first photos from the ad campaign. And oh baby, is the "Baby" singer all grown up.

The image for Calvin Klein jeans features the fashion house's signature greyscale, simplistic photography. A muscled and tattooed Bieber, shirtless, shows off his Calvin Klein boxer waistband as he grasps Stone's thigh, who covers her own toplessness with Bieber's torso.

Believe it. @justinbieber + @lara_stone for Calvin Klein. #mycalvins A photo posted by Calvin Klein (@calvinklein) on Jan 1, 2015 at 2:10pm PST

The second image, shared by Bieber on Instagram, features nothing but Bieber and his Calvins... well, and a few tattoos, of course.

 Officially a part of the legacy. Check out @calvinklein for more. #mycalvins. #newfaceofcalvinklein

A photo posted by Justin Bieber (@justinbieber) on Jan 1, 2015 at 2:07pm PST

The partnership should come as no surprise for fans of Biebers -- the singer has been posting saucy Instagram selfies for months, always showing off that Calvin Klein waistband. Bieber and Stone were even spotted together last year, at Fashion Rocks, where they teased the announcement when Bieber just stripped down to his boxers.

See More Justin Bieber
Join the Discussion