The O.C.'s Mischa Barton Is Joining The Hills Reboot

MTV announces the actress will be joining Brody Jenner, Whitney Port and Heidi Pratt on the reality show

The O.C. meets The Hills in MTV's reboot of the hit reality show and it's all because of Mischa Barton. 

On Wednesday, MTV announced the teen star will be joining Brody Jenner, Whitney Port and Heidi and Spencer Pratt on the cast of The Hills. The reboot of the reality series is aptly named The Hills: New Beginnings and will feature both old and new faces as they go about their daily lives in the hills of Los Angeles. 

After the big reveal, Barton said on Instagram: "The secret's out... I'm joining the cast of The Hills. When MTV approached me with the chance to be a part of the reality show that was inspired by The OC, it felt like the perfect opportunity for an irresistibly inviting new chapter."

While most of the original cast members are returning, other big names like Lauren Conrad and Kristin Cavallari have chosen to let Brody, Whitney and the others take front and center. 

At the moment, Kristin is busy filming the second season of her show Very Cavallari, but is excited to see the rest of her friends embark on this exciting new journey. She recently told E! News, "Heidi and I have joked about swapping an episode for an episode. I'll have to bring it up with E! and MTV. But yeah, I'm really excited for them. I can't wait to see it."

Likewise, LC has her hands full with her own work and family, so she has chosen to sit this one out. "Lauren is concentrating right now on her Kohl's line and her charity work, which she is very passionate about," a source previously explained to E! News. 

Meanwhile, filming is already underway for the highly-anticipated docuseries. So far mum's the word on what drama will be addressed on the show, but one thing that is for sure is there will be plenty of babies.

Heidi and Spencer Pratt already have baby Gunnar ready for his close-up, while Whitney still feels a bit shy about having her son, Sonny, in front of the cameras. In Sept. she told E! News, "will pop up here and there because he exists in my life," but she added, "I don't want him to be plastered all over the TV."

The series is slated to premiere in 2019.