Watch: Kourtney Kardashian Shares Update on Co-Parenting With Scott DisickRachel Bilson and Hayden Christensen don't need to use the Force when it comes to their dynamic. The O.C. star offered rare insight into co-parenting their 11-year-old daughter Briar Rose together, detailing how she and the Star Wars alum maintained their family unit in the years since their breakup. "Great," Rachel told Kristin Cavallari on the Jan. 20 episode of the Let's Be Honest podcast. "Ours is like a unique version of it, we get along very well. We do a lot of stuff together. A lot.