Gloria Vanderbilt at home. Photographed by Horst P. Horst, Vogue, April In the trailer for the HBO documentary, Nothing Left Unsaid, Gloria Vanderbilt Bert Stern, Robert Mapplethorpe, Michelle Dockery, Annie Leibovitz, Richard Avedon, Elsa Peretti, Gloria Vanderbilt, Cornelius Vanderbilt, Lauren Bacall