Kate Middleton and Prince William Attend Annual Order of the Garter Service at Windsor Castle

Catherine, Princess of Wales marked her attendance at the annual Order of the Garter Service alongside her husband Prince William and fellow members of the British royal family. The ceremonial gathering took place at St. George's Chapel within Windsor Castle in Windsor, England on Monday, June 15.

The Order of the Garter, Britain's most senior order of chivalry, is commemorated each year through a formal service and procession held at the castle. The tradition carries centuries of history, dating back to King Edward III in medieval times, who drew inspiration from Arthurian legend and the Knights of the Round Table to establish his own group of honorable knights.

For the occasion, Kate selected a custom Patrick McDowell creation, which featured a satin coat dress adorned with delicate floral embroidery. The ensemble included a tulle skirt underneath, adding dimension to the overall silhouette. She completed the look with a wide-brimmed sun hat.

Prince William, King Charles, and Queen Camilla all wore the distinctive ceremonial dress of the Order: blue velvet robes paired with ostrich-feather plumed hats, a custom that has been observed since 1348.

The Order today comprises the King in his role as Sovereign of the Garter, several senior members of the Royal Family, and twenty-four knights selected in recognition of their contributions. Knights are personally chosen by the Sovereign to honor individuals who have held public office, made significant contributions to national life, or served the Sovereign directly.

The appearance comes shortly after Kate and William attended the 2026 Trooping the Colour event with their children.