Justin Bieber and Lara Stone Heat It Up In New Calvin Klein Spring 2015 Campaign. Justin Bieber wants you to know he’s all grown up, and wearing Calvins. The singer is turning up the heat and can be seen alongside brand ambassador Lara Stone in the newly released ads which confirm Justin is now the new face of the brand. Shot by Mert Alas and Marcus Piggott we can image there’s a lot of happy believer fans after seen the new campaign…….