Recreating a scene from “Notting Hill,” Julia Roberts sat down to dinner with a group of friends who had no idea a famous Hollywood star was joining them. Set up by Marie Clare magazine for its July issue, the dinner party mirrored one in the movie that features Roberts as a movie star who is dating a London bookstore owner — except that at the real dinner party, one of the guests failed to recognize the guest of honor. “And what do you do for a living,” she asked Roberts. “I’m an actress,” Roberts replied. “Anything I might have seen?” the woman went on. “How about ‘Pretty Woman?'” Roberts answered. Suddenly it dawned on the questioner who she was talking to. “She’s not very good with faces,” the woman’s fianc said to Roberts. “Please don’t take it personally.” Roberts didn’t.