Rachel Bilson & Olivia Wilde Have an 'O.C.' Reunion at Baby2Baby Gala!

Rachel Bilson and Olivia Wilde pose for a cute photo together while attending the 2018 Baby2Baby Gala on Saturday (November 10) in Culver City, Calif.

The actresses worked together on The O.C. back in 2005!

Some more stars who stepped out for the important cause included Shiri Appleby, Kat Dennings, Olivia Culpo, Sarah Wright, and Ryan Michelle Bathe.

Lauren Conrad attended the event with her husband William Tell.

I am a voter. founder Mandana Dayani was seen hanging out with her friend Elizabeth Chambers.

FYI: Rachel is wearing a Johanna Ortiz dress. Olivia is wearing a Givenchy outfit and a Lala Lexa clutch. Elizabeth is wearing a Monique Lhuiller dress. Lauren is wearing a Rhea Costa dress. Shiri is wearing an ML Monique Lhuillier gown.