NEW YORK, NY - SEPTEMBER 20: Halston, Loulou de la Falaise, Potassa, Yves St Laurent, and Nan Kempner at the Opium party at Studio 54 on September 20, 1978 in New York City. (Photo by Sonia Moskowitz/Getty Images)
NEW YORK, NY - SEPTEMBER 20: Halston, Loulou de la Falaise, Potassa, Yves St Laurent, and Nan Kempner at the Opium party at Studio 54 on September 20, 1978 in New York City. (Photo by Sonia Moskowitz/Getty Images)