King Charles III may have been the person of honor at this year’s Trooping the Colour, but Prince William and Princess Kate’s kids managed to steal the show.

Prince George, 9, Princess Charlotte, 8, and Prince Louis, 5, joined their parents and other members of the royal family at the 74-year-old king’s early birthday celebration on Saturday, June 17.  While the Prince of Wales, 40, joined Charles, 74, for the formal review of the British military, the three children rode in a carriage with mom Kate, 41, and step-grandmother Queen Camilla. While waving to the waiting public, Louis pulled an array of funny faces — including one where he plugged his nose.

Louis and his older siblings later joined their parents, Charles, Camilla, 75, Princess Anne and Prince Edward on the balcony of Buckingham Palace to watch the annual Royal Air Force flyover. (Charles’ second son, Prince Harry, and his wife, Meghan Markle, were not in attendance at the event.)

George and Louis, for their part, twinned in matching navy blazers with red ties. The pop of crimson matched their sister Charlotte, who looked adorable in her red-and-white dress. The Wales siblings stood in front of their parents on the palace balcony, pointing out the military planes as they flew across the sky.

Saturday’s event marks Charles’ first Trooping the Colour event following the death of his mother, Queen Elizabeth II. He ascended the throne upon Elizabeth’s death in September 2022 at age 96 and was officially crowned as the nation’s sovereign during his coronation ceremony on May 6. George served as one of his grandfather’s four Pages of Honour at the Westminster Hall ceremony, while Charlotte and Louis twinned with the Prince and Princess of Wales’ coronation outfits.