PARTIESPhotos: Raf Simons: The Luckiest Guy in the Upper East SideFor former Dior designer begins a new life.by W Staff11.06.151Raf Simons. Photo by bfa.com.2Dakota Johnson and Emily Blunt. Photo by Getty Images.3Elizabeth von Guttman, A$AP Rocky, and Alexia Niedzielski. Photo by bfa.com.4Dancers perform “November Steps” choreographed by Tom Gold. Photo by Getty Images.5Kiernan Shipka and Dakota Johnson. Photo by Getty Images.6Dakota Johnson and Raf Simons. Photo by Getty Images.7Raf Simons, Jean-Georges d’Orazio, Jack McCollough, and Lazaro Hernandez. Photo by bfa.com.8APigeon. Photo by bfa.com.9Giovanna Battaglia. Photo by bfa.com.10Olympia Scarry and Victoire de Castellane. Photo by Getty Images.11Leelee Sobieski. Photo by Getty Images.12Fernanda Ly13Peter Marino and Sidney Toledano. Photo by Getty Images.