Set in the quaint setting of Sag Harbor's Madison Street, the Rizzoli Bookstore at Empire Gallery was host to Kelly Klein's book signing of her second photo-collection, Horses, this last Saturday. But don't let the charming outside fool you. Inside, the store was stock full of glamorous guests and eager fans, excited to meet the equestrian slash photographer, not to mention a range of costly and rare books as well. The gorgeous ex-wife of fashion designer Calvin Klein, dressed in a short white Herve Leger dress, navy blazer, and some killer nude heels, was a gracious hostess to the clamoring guests who were eager to discuss the book with her. Besides the passionate horsewoman's own shots, legendary photographers Annie Leibowitz, Helmut Newton, Bruce Weber, Chris Makos, and a variety of others also contributed to the collection. Not a big fan of horses but know someone who is? The book makes the perfect gift for any horse lover, and goes to a great cause: All proceeds from the sales benefit the Equestrian Aid Foundation.