The luncheon???s lively ???silent??? auction found bidders competing for bags donated by luxury brands such as Chanel, Burberry, Valentino, and Prada, as well as bags once owned by such celebrities as Liza Minnelli, Heidi Klum, Gossip Girl???s Blake Lively, Beyonc??, Courtney Cox???and New York Mayor Michael R. Bloomberg, who contributed a golf bag.