The Princess of Wales was at the Garter Day Service at St. George’s Chapel, Windsor Castle, an event she missed last year due to her cancer treatment

The Princess of Wales and the Duchess of Edinburgh were left giggling together as they watched the annual Garter Day procession at Windsor Castle

The shared Instagram account for Kate Middleton and Prince William welcomed a trio of guest posters Sunday, when children Prince George, Princess Charlotte, and Prince Louis took the platform over. The occasion: Father's Day, with a post in tribute to their dad, the Prince of Wales.