Roy Halston Frowick, or Halston to you and I, is the designer who began his career as a milliner for Bergdorf Goodman (designing Jacqueline Kennedy‘s iconic pillbox hat), who went on to become “the best designer in America” in 1972 (Newsweek). After launching his eponymous womenswear label in 1968, which included heavyweight cashmere evening dresses, jersey sarongs (a design aesthetic since emulated by Diane von Furstenberg)...