Lauren Conrad, 35, and Stephen Colletti, 35, met up with each other and other familiar faces at a bash that every Laguna Beach: The Real Orange County fan would have loved to be at over the weekend. The former lovebirds were seen posing and smiling with former high school classmates/co-stars, Dieter Schmitz, 35, Trey Phillips, 34, and Loren Polster, in several new Instagram pics that were posted in the past 24 hours.