Catherine, the Princess of Wales, attended the annual Trooping the Colour ceremony today to mark King Charles III’s official birthday. The 44-year-old princess appeared in a baby blue dress by Catherine Walker, paired with an oversized Philip Treacy hat and pearl earrings. According to the Daily Express US, observers noted the ensemble’s familiar feel, comparing the powder-blue outfit with white piping to styles worn by Princess Diana, who first showcased a similar Catherine Walker look in 1987. Fox News reported that the Princess of Wales also wore Princess Diana’s iconic three-strand pearl bracelet, a piece designed by Nigel Milne that Diana famously wore in 1989. The bracelet was inherited by Prince William following Diana’s death in 1997 and later gifted to Kate. During the event, 11-year-old Princess Charlotte appeared to wear a remarkably similar bracelet while sitting across from her mother in a royal carriage. The family’s appearance featured coordinated looks, with Princess Charlotte wearing a white dress with blue details and Prince George wearing a baby blue tie. Prince Louis joined them in the carriage, while Prince William participated in the military procession on horseback. King Charles appeared in a full military dress uniform with medals and a blue sash, while Queen Camilla wore a scarlet ceremonial coat with gold detailing and a dark hat with a white feather plume. The ceremony, which took place at Horse Guards Parade in London, featured more than 1,500 military personnel, 200 horses, and 400 musicians. The event concluded with the Royal Family gathering on the Buckingham Palace balcony to view a Royal Air Force flypast. While the King was born in November, the tradition of holding the celebration in June was established by King Edward VII.