Teen heart throb Justin Bieber was paid $12 million to design the One Less Lonely Girl collection released in 2010 by OPI. The fever inducing pop star remains within the top 3 most popular accounts on social media sites across the board, making his audience, mainly made up of young females, a highly sought after demographic for companies. The superstar was only 16 at the time of the deal, making him one of the youngest, and highest paid endorsed celebrities in the business. Throughout his short career, Justin has signed numerous highly lucrative endorsement deals, including $3 million to represent the skin care line Proactiv for 2 years. Most recently, the now 21 year old signed as the face of Calvin Klein, and although the figures of his contract are not yet disclosed, the young star is undoubtedly paid handsomely for his representation.