News Kate Middleton Crowns Herself With Princess Diana’s Favorite Tiara for Posh Party at the Palace By Leena Tailor 5:44 PM PST, December 5, 2017 Getty Images / Mark Cuthbert A tiara fit for a princess! Kate Middleton made a nod to her late mother-in-law, Princess Diana, by wearing her favorite tiara to a white-tie event at Buckingham Palace in London on Tuesday. The pregnant royal and her husband, Prince William, left their son, Prince George, and daughter, Princess Charlotte, at home for the evening to attend a reception for diplomats hosted by the Queen.Middleton looked stunning with the Queen Mary’s Lover’s Knot tiara placed on her shiny brown locks, which were swept into an updo. She blinged up her outfit further with a diamond necklace and pearl and diamond earrings.Getty Images / Mark CuthbertThe tiara, which Queen Mary had made around 1914, is more than 100 years old. Middleton also wore it to the annual event last year.See more on Middleton and her pregnancy in the video below.RELATED CONTENT: PICS: Kate Middleton Gardens With Local Schoolchildren While Prince William Travels to Finland NEWS: Kate Middleton Makes Appearance After Prince Harry Engagement News, Says They’re ‘Absolutely Thrilled’ NEWS: Kate Middleton Stuns in Sparkling Gown at Royal Variety Performance With Prince William Kate Middleton Shows Off Her Growing Baby Bump This video is unavailable because we were unable to load a message from our sponsors. If you are using ad-blocking software, please disable it and reload the page.