Justin Bieber campaign boosts Calvin Klein's social status

Calvin Klein caused a spike in Bieber Fever.

Since the brand unveiled Justin Bieber as the face and body of its spring underwear campaign, its social channels have added a combined 3.6 million followers.

It probably didn't hurt that the Dutch model Lara Stone seductively posed alongside the singer-songwriter in several of the images shot by Mert Alas and Marcus Piggott - but Bieber was clearly the main attraction.