Bruce Willis, Kiera Knightley & Dame Joan Collins Party With Valentino at Lincoln Center Inside the fashion-fueled bacchanal By Zachary Weiss • A storm of flawless fashionable folks, and Bruce Willis, all descended upon Lincoln Center’s Alice Tully Hall last night for an evening celebrating Valentino’s design duo, Maria Grazia Chiuri and Pierpaolo Piccioli, who received the Women’s Leadership Award in the …