Reeser joined the cast of “The O.C.”

While the two worked on the show together throughout its third season,Barton left “The O.C.

“She’s on The Hills?

Autumn Reeser visiting Hallmark Channel’s “Home & Family” set at Universal Studios Hollywood in 2019

Isn’t it a reality show?”

Reeser asked, explaining that she doesn’t pay attention to pop culture news.

The Hallmark star reunited with her colleagues at the O.C.

Split image of Mischa Barton and Autumn Reeser

At the time, she had taken on the role of Julie Cooper in “The Unauthorized O.C.

Musical,” with her old colleagues coming out in support of both their friend and the show.

Autumn Reeser, Rachel Bilson, Josh Shwartz, and Stephanie Savage posing together at opening night of “The Unauthorized O.C. Musical”