Princess Catherine paired a lemon-yellow cape gown by Elie Saab with Queen Mary's Lover's Knot Tiara for a state banquet at Windsor Castle on October 20, honoring Sultan Haitham bin Tarik of Oman. The Princess of Wales's evening ensemble combined a contemporary runway design with one of the British royal family's most recognizable heirloom jewels, famously worn by her late mother-in-law, Princess Diana.
The banquet marked the first day of the Sultan's three-day state visit to the United Kingdom. Hosted by King Charles III and Queen Camilla, the event formed part of a diplomatic visit that marked the first state visit by an Omani sultan to Britain since 1982.