Mischa Barton is reportedly joining 'The Hills' reboot.

Mischa Barton

Mischa Barton

The 32-year-old actress is known for starring in teen drama series 'The O.C.' - which ran from 2003 to 2007 - but she's now set to take on reality television as she's been lined up for the reboot of the popular MTV series, which will air in 2019 and will be subtitled as 'The Hills: New Beginnings'.

A TV insider told The New York Post's Page Six column: "She was around back in the day and went to all the clubs. She could make for good TV."

Mischa will be joining the likes of Heidi Montag, Spencer Pratt, Audrina Partridge, and Brody Jenner on the rebooted show, after several of the returning cast took to social media to confirm their roles.

Brody - who is the son of Caitlyn Jenner, formerly known as Bruce Jenner - will appear on the show with his wife Kaitlynn Carter Jenner, and after rumours of their involvement surfaced in August, he took to Instagram in September to confirm his return.

Posting a picture of the Sunset Strip with his head shot adorning one of the buildings, the 35-year-old reality star wrote: "Don't call it a comeback. THE HILLS: New Beginings coming soon to @mtv #haterswillsayitsphotoshopped (sic)"

And a source later added: "They are excited to be a part of the show.

"Everybody wants Brody to come back. He was such a big part of the show. It truly wouldn't be the same without him."

Stephanie Pratt, 32, previously took to Instagram to announce that she will also be involved, saying: "I am so excited to start filming #TheHills #NewBeginnings #MTV with my friends & family! it's going to be EPIC @mtvthehills."

Whilst Whitney Port confirmed her involvement when she wrote: "Throw back to my first VMAs look. Good thing I get to go back and make up for my insane looks on #thehills on the NEW HILLS REBOOT!!! Maybe they'll let me out of the fashion closet this time. #mtv. (sic)"