Stephen Colletti or Stephen August Colletti (born February 13, 1986) is an American actor and television personality. He was featured on the MTV reality show Laguna Beach : The Real Orange County. He also co-hosted MTV's Total Request Live.
Stephen Colletti was in his senior year of high school when the first season of Laguna Beach : The Real Orange County began production after MTV asked him to join. He also appeared in one episode of The Hills in 2007.
In 2007, Stephen Colletti got the role of Chase Adams in the CW television series One Tree Hill. On February 8, 2011, Colletti was upgraded to a main cast member. His girlfriend, Chelsea Kane played alongside him for a few episodes in season 9, as a love interest for Stephen's character, Chase. Colletti was also featured in the Taylor Swift music video for "White Horse".