Oleg CASSINI, ARI Ralph, and Erte were all designers for Jackie Kennedy during her time as First Lady of the United States. Oleg CASSINI was an Italian-American fashion designer who created many of Jackie's iconic looks. ARI Ralph was a French-born American fashion designer who designed some of Jackie's most memorable outfits. Ralph Lauren, also known as Ralph Lauren, was an American fashion designer who created some of Jackie's most iconic ensembles. Finally, Erte was a Russian-born French artist who designed some of Jackie's jewelry and accessories. All four of these designers helped to create Jackie's iconic style and fashion legacy.