Princess of Wales Kate honors Queen Elizabeth and Diana at King Charles Coronation Thousands of people gathered for King Charles III's coronation on Saturday and Catherine, Princess of Wales, found a way to honor two important people who weren't there: Queen Elizabeth II and William's late mother Diana, the last Princess of Wales before Catherine. The princess wore the George VI Feston necklace, according to Vogue. The three-strand diamond necklace is important to her ties to the late Queen Elizabeth II and her father, King George. The King commissioned the necklace to be made for his daughter in 1950. Queen Elizabeth II attended a state banquet given by King Carl XV Gustav and Queen Silvia of Sweden in her honor in Stockholm, Sweden, May 25, 1983. Queen Elizabeth II has been photographed wearing the stunning jewelry several times, including This is a dinner party at the White House with former President George W. Bush in 2007. The princess often honors her late mother-in-law Diana, who died in 1997, with the jewelry she wears. On Saturday, she wore a pair of the pearl and diamond earrings that Diana wore so often.