Author Ben Mezrich and his wife, designer Tonya Chen Mezrich, couldn’t wait for Friday to see director Baz Luhrmann’s new movie, “The Great Gatsby,” so the couple hosted a special screening for some of their friends. Guests showed up at the AMC Boston Common in their finest 1920s fashions. . . . Jeffree Star, model, designer, makeup artist, DJ, and singer-songwriter, had lunch with a few friends on the patio at Cafeteria overlooking Newbury Street. Word is he’s in town for a project with Miss KL, Karmaloop’s sister site.