The "Trooping the Colour" parade took place to mark the Queen's 70th anniversary on the throne. There, Duchess Kate honoured her mother-in-law Princess Diana.The Trooping the Colour parade for 2022 was todayThe royals were all there, including Duchess KateThis is how Kate paid tribute to Princess DianaThe eyes of the world are on London for Trooping the Colour and Queen Elizabeth's Jubilee. In the process, all the royals gathered in and around Buckingham Palace.The presence of royals who are no longer with us was also clearly felt. While especially Prince Philip is always missed at the side of the Queen, Duchess Kate honoured her mother-in-law Princess Diana.Subtle detail: How Kate Middleton paid tribute to DianaAs she and sister-in-law Duchess Meghan often do, Kate wore jewelry that once belonged to Diana to commemorate the special occasion, which can you can see in the video above.Also interesting:With her white outfit, which is by Alexander McQueen, Kate combined a sapphire diamond necklace with matching earrings from her husband Prince William's late mother.Kate Middleton was beautiful as always as she led the parade in a carriage with Duchess Camilla and her three children Prince George, Princess Charlotte and Prince Louis.Watch the video above to see Kate's tribute and when Diana wore it!