Mischa Barton is looking cool in blue as she wears azure hued face mask

Mischa Barton was looking cool in blue as she enjoyed a neighborhood walk on Tuesday.

The actress, 34, sported a sparkling azure face mask and matching Yosemite sweatshirt for a leisurely jaunt around the block.

Though still attached to her phone, Mischa appeared to be clearing her head as she explored the tranquil Los Angeles neighborhood on foot.  

The former O.C. actress trekked down the sidewalk in a pair of worn white sneakers and cream corduroy trousers.

While rather dressed down, she did inject a touch of glam with a stylish silver chain necklace.

Her blonde hair bounced off her shoulders as she explored the quiet neighborhood.

Mischa at times wore a rather serious and determined expression on her face as she walked about, seemingly deep in thought at certain points of the stroll.

Mischa has an endless list of credits to her name, but the actress is undoubtedly best known for playing California girl Marissa Cooper in the hit teen series The O.C. from 2003 to 2006.

While it’s been a couple of years since she has acted in anything, Mischa was recently back on small screens in the reality reboot, The Hills: New Beginnings.

Mischa appeared opposite MTV stars Audrina Patridge, Brody Jenner, Heidi Montag, Spencer Pratt, and Whitney Port.

The show will be returning for a second season, but Mischa will not and has reportedly been replaced with Caroline D’Amore.

Romantically, she has been dating photographer Gian Marco Flamini for the last few months.

The duo were first seen together during a romantic stroll through Echo Park in September.