The picture showed the Prince of Wales and his children smiling as they posed for the camera with Louis sitting on his father's lap. Another image showed the 5-year-old hugging William, while Charlotte, 8, and George, 9, shared a laugh at the adorable moment.
The family photos come one day after the royals attended King Charles III's Trooping the Colour event, which marks the monarch's birthday parade. (Even though Charles turns 75 in November, the celebrations are traditionally held on a Saturday in June.)
Kate donned a bright emerald design by Andrew Gn for her role as Colonel of the Irish Guards on the big day. She accessorized with a wide-brimmed hat by Philip Treacy and a golden shamrock brooch by Cartier, according to Women's Wear Daily.