• Justin Bieber

Justin Bieber (Photo : Facebook)

"Baby" hit maker Justin Bieber, 20, took to Instagram to announce that he is now officially a Calvin Klein underwear model.

"Officially a part of the legacy. Check out @calvinklein for more. #mycalvins. #newfaceofcalvinklein. This is just the start of the year #mycalvins #beallyoucanbe #learnfromyourfaults #risetosuccess #dontbeashamedredeem #thebestisyet2come," he wrote.

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After months of hiatus and a series of legal battles in 2014, Bieber is back as a model of the new Calvin Klein Jeans and Calvin Klein Underwear campaigns alongside model Lara Stone.

Bieber also took to Facebook to share the Calvin Klein black and white photos.

"It begins. Calvin Klein #mycalvins," Bieber captioned a photo, which shows his bulge while in a Calvin Klein underwear. In just seven hours, the photo received more than 650,000 likes.

In 2014, Bieber took a break from his career as a recording artist. Apparently, he is making a comeback in the music industry in 2015.

Bieber's long-time manager Scooter Braun took to Instagram to tease the Canadian pop star's upcoming album. He posted a photo bearing the words "2013 WAS PRACTICE. 2014 WAS THE WARM UP. 2015 IS GAME TIME" with Bieber tagged.

Even before details of the upcoming album are released, rumors are claiming that Bieber is going to record a collaboration song with Prince Jackson, son of the late Michael Jackson. On Jan. 6, Tuesday, the hashtag #JustinWereReady started trending on Twitter worldwide.

Bieber's first three albums "My World 2.0," "Under The Mistletoe" and "Believe" were released in 2010, in 2011 and in 2012 respectively. Details of his fourth album are yet to be unveiled.