Rachel Bilson Catches Up With Mischa Barton: "

Rachel Bilson stops by the TRESemme hair salon and lounge at Mercedes-Benz Fashion Week at NYC’s Bryant Park on Tuesday (September 15).

The 28-year-old star of the TRESemme Steal the Show campaign told me exclusively that she very much enjoyed the Dior Homme dinner last week. “I was happy to see [my former O.C. co-star Mischa Barton],” Rachel told JustJared.com. “I hadn’t seen her in a while, so that was really good. The [Cooper Square] hotel was really nice and so was the dinner.”

10+ pictures inside of Rachel Bilson stealing the show…