TV Article O.C. reunion: Rachel Bilson, Autumn Reeser at Unauthorized O.C Musical By Samantha Highfill Samantha Highfill Samantha is a writer based in Los Angeles. Television is her one true love, and she tweets about it. A lot. EW's editorial guidelines Published on August 31, 2015 05:57PM EDT Photo: Joshua Blanchard/Getty Images It’s starting to feel a little like 2005 in here. (And we love it.) Not only did Sunday’s performance of The Unauthorized O.C. Musical in Los Angeles star original O.C. cast member Autumn Reeser, but a few of Reeser’s former costars were in attendance. Of course, Josh Schwartz and Stephanie Savage, the minds behind The O.C., showed up to witness the musical in action, and they were joined by stars Rachel Bilson (Summer Roberts), Melinda Clarke (Julie Cooper), and Kelly Rowen (Kirsten Cohen). So basically, the women of The O.C. took some time away from Yogalates … but what were the men doing? •The Unauthorized O.C. Musical creators walk us through how they’ll recreate ‘Champagne Supernova’ •The Unauthorized O.C. Musical will include Marissa shooting Trey, and other things you need to know •Calling all newpsies! The real-life Cohen McMansion from The O.C. is for sale WANT MORE EW? Subscribe now to keep up with the latest in movies, television and music.