"I was actually asked to be on The Hills," Bilson revealed during their conversation, adding that she "graciously passed" on the offer when approached. "Then, who they wound up casting was Mischa."
Bilson explained that she didn't even know any of the cast members for the series, and the only person from The Hills she was familiar with was a member of the original series.
"I've met Lauren Conrad before, but she's not even on that [revival] show," Bilson said. "I like Lauren a lot... I know her a little, tiny bit and she's cool. But I don't know anyone [else] from The Hills."
Incidentally, Barton and Bilson's teen drama The O.C. was one of the main inspirations for the MTV reality series Laguna Beach, and the show's subsequent spin-off, The Hills.