Calvin Klein Jeans and Calvin Klein Underwear have announced their Spring 2015 global advertising campaign, photographed by Mert & Alas. The new campaign features musician Justin Bieber and model Lara Stone. Bieber's single "Baby" sold an astounding 9.3 million copies in 2013 and has been certified platinum 30 times. In 2014, he was recognized by Twitter as the most tweeted-about artist of all time. Regarding his appearance in the ad, Bieber commented, "I've always loved Calvin Klein and have worn their jeans and underwear, so this feels like a dream come true."

Meanwhile, Lara Stone, who has been active in Calvin Klein's global advertising campaigns since 2010, said, "I was able to reunite with the Calvin Klein family through this shoot. I think it really captures the energy of the Calvin Klein brand."

By involving the brand and Bieber's followers, Spring 2015 will be Calvin Klein's most digitally focused advertising campaign to date. A social media campaign using the hashtag "#mycalvins" will also be launched, with people posting selfies wearing outfits from the brand.