Arnold Isaacs, known as Arnold Scaasi, was a Canadian fashion designer who achieved the December 1955 cover of Vogue, which led to his starting a ready-to-wear line the following year. Scaasi has created gowns for First Ladies Mamie Eisenhower, Barbara Bush, Hillary Clinton, and Laura Bush, in addition to such notable personalities as Joan Crawford, Ivana Trump, Princess Yasmin Aga Khan, Lauren Bacall, Diahann Carroll, Elizabeth Taylor, Catherine Deneuve, Brooke Astor, Arlene Francis, Mitzi Gaynor and Mary Tyler Moore.