The O.C. Cast Then & Now: Pics 1 of 9 The O.C. Stars Then & Now Warner Bros Tv/Kobal/Shutterstock ‘The O.C.’ aired from 2003 until 2007 on Fox. The scripted drama followed the lives of families living in Orange County, California. Ben McKenzie starred as Ryan Atwood, a troubled teen from the wrong side of the tracks who gets taken in by the wealthy Cohen family. Ryan befriended Seth Cohen, the nerdy son of the family, who doesn’t fit in with the others in the glamorous town he grew up in. Mischa Barton and Rachel Bilson were the leading female stars of the beloved teenage drama. In the years since ‘The O.C.’ ended, all of the stars have gone onto continue their careers in Hollywood, and they’ve grown up quite a bit since their time on the show. Keep clicking through the gallery to check out all of the show’s biggest stars and how they’ve transformed from then until now! April 13, 2020, 10:44AM 2 of 9 Mischa Barton Warner Bros Tv/Kobal/Shutterstock Mischa Barton played Marissa Cooper on ‘The O.C.’ She was killed in the show’s season three finale, and after some troubled years, she took a break from Hollywood. She returned in 2019 as a cast member on ‘The Hills,’ and has also competed on ‘Dancing With the Stars.’ April 13, 2020, 9:47AM 3 of 9 Ben McKenzie Warner Bros Tv/Kobal/Shutterstock Ben McKenzie played Ryan Atwood on ‘The O.C.’ After the show, he went on to star on ‘Southland’ from 2009 until 2013, as well as ‘Gotham’ from 2014-2019. April 13, 2020, 9:47AM 4 of 9 Rachel Bilson Warner Bros Tv/Kobal/Shutterstock Rachel Bilson played the loveable Summer Roberts on ‘The O.C.’ When the show ended, she starred as the lead character on the CW’s ‘Hart of Dixie from 2011 until 2015. She was also on the ABC series ‘Take Two,’ but it was cancelled after one season. April 13, 2020, 9:47AM 5 of 9 Adam Brody Warner Bros Tv/Kobal/Shutterstock Adam Brody played the fan-favorite character, Seth Cohen, on ‘The O.C.’ He made a bunch of indie movies after the series ended, and also married a fellow teen drama star — Leighton Meester, from ‘Gossip Girl’! April 13, 2020, 9:47AM 6 of 9 Peter Gallagher Warner Bros Tv/Kobal/Shutterstock Peter Gallagher starred as Jewish dad, Sandy Cohen, on ‘The O.C.’ He’s starred in a bunch of shows and movies since ‘The O.C.’ ended, including ‘Zoey’s Extraordinary Playlist,’ ‘Togetherness,’ ‘Grace and Frankie’ and more. April 13, 2020, 9:51AM 7 of 9 Melinda Clarke Warner Bros Tv/Kobal/Shutterstock Melinda Clarke played Marissa’s mom, Julie Cooper, on ‘The O.C.’ She had a main role on ‘Nikita’ from 2010-2013 after the show ended, and has also appeared on shows like ‘The Vampire Diaries,’ ‘Gotham’ and more. April 13, 2020, 10:20AM 8 of 9 Tate Donovan Warner Bros Tv/Kobal/Shutterstock Tate Donovan played Marissa’s dad, Jimmy Cooper, on ‘The O.C.’ He was a regular star on seasons 1-2, a guest star during season 3, and appeared as a special guest in season 4. After ‘The O.C.,’ Tate had a starring role on ‘Damages’ until 2010. He also appeared on other shows and in several movies over the years. April 13, 2020, 10:25AM 9 of 9 Chris Carmack Warner Bros Tv/Kobal/Shutterstock Chris Carmack was Luke Ward on ‘The O.C.’ He went on to star in the ABC series ‘Nashville’ from 2013-2018, and has been a character on ‘Grey’s Anatomy’ since 2018. April 13, 2020, 10:48AM Click to Subscribe to Get Our Free HollywoodLife Daily Newsletter to get the hottest celeb news.