Lauren Conrad and Lo Bosworth Have a Mini Hills Reunion at Friend's Wedding

If you were a fan of Laguna Beach and The Hills back in the day, then you know just how much Lauren Conrad values her close friendships. And she proved once again that she'll always be there for her besties when she she served as a bridesmaid in her friend's wedding on Saturday, despite giving birth to her first child, son Liam, just last month. The fashion designer looked stunning in a light gray gown at pals Cassie Herschenfeld and Ben Katz's wedding at the Ojai Valley Inn & Spa in Ojai, CA, on Aug. 19.

In addition to making the day a fun outing with her husband, William Tell, who didn't appear to be in the wedding party, Lauren also reunited with her best friend and former The Hills costar, Lo Bosworth, who also served as a bridesmaid. E! News reveals that while Lauren did bring baby Liam with her, he spent the afternoon in the hotel room with his nanny. "She was such a good sport about being a bridesmaid so soon after giving birth," a source said. "But Cassie is one of her dearest friends and she didn't want to miss it."