Catherine, Princess of Wales, underscored Franco-British ties through her wardrobe as she and Prince William welcomed French President Emmanuel Macron and First Lady Brigitte Macron at the start of a three-day state visit to the United Kingdom on 8 July. For the midday arrival ceremony at RAF Northolt, the Princess wore a blush-pink Bar jacket and matching tulle skirt from Dior—her first documented public appearance in the French label—completing the look with pearls once owned by Queen Elizabeth II. The choice of a French heritage house was widely read as sartorial diplomacy toward the visiting head of state. At the evening state banquet in Windsor Castle’s St George’s Hall, hosted by King Charles III and Queen Camilla, she changed into a dark red silk creponne gown by Sarah Burton for Givenchy. Burton, now creative director of the French brand, previously designed the Princess’s 2011 wedding dress, adding another layer of symbolism: a British designer leading a Paris house for a Franco-British occasion. The Princess paired the gown with Queen Mary’s Lover’s Knot Tiara—famously favoured by Princess Diana—marking her first public tiara appearance since December 2023 and her return to full formal duties following cancer treatment last year. The combination of Dior and Givenchy, alongside the historic diamond-and-pearl diadem, turned the visit’s ceremonial moments into a deliberate display of fashion diplomacy.