How did top models like Joan Smalls, Hilary Rhoda, and Arizona Muse fete the end of NYFW? With a glamorous cameo at Estée Lauder's Modern Muse fragrance party! Joan is the first to wear Prabal Gurung Spring 2014 - and we caught up with both the model and designer on the red carpet. Watch on for all the style scoop. On Allison: Topshop">