By Rachel Mcgrath For Dailymail.com
Published: 05:01 BST, 5 October 2020 | Updated: 17:58 BST, 5 October 2020
She started out as a child actress and found fame as Marissa Cooper on Fox TV's hit series The O.C.
And more recently, Mischa Barton returned to the spotlight as part of MTV's reboot The Hills: New Beginnings.
On Sunday, the 34-year-old was spotted taking her beloved dog for a walk near her LA home.
Casual Sunday: Mischa Barton was spotted taking her beloved dog for a walk near her LA home on Sunday, wearing a pale green sweatshirt and navy shorts
The actress was dressed in a pale green sweatshirt and navy shorts.
She stepped out in a pair of black Gucci slippers and wore her shoulder-length hair with an off-center parting and tucked behind her ears.
Barton watched patiently, holding a leash, as her pup explored some grass.