Christie Brinkley, Candace Bushnell and Laurie Anderson Party in the Hamptons
“Everybody back up!” someone called to a crowd of people surrounding the model and actress Christie Brinkley, who was standing near a neatly trimmed lawn on a sunny and hot Saturday afternoon. Ms. Brinkley had just arrived at Polo Hamptons, an annual cocktail party and polo match held over two weekends in July on the…