WPA Pool // Getty Images Kate and Prince William at the state banquet for the U.S. in September 2025. Sometimes referred to as the Cambridge Lover's Knot, the topper is, in fact, a replica of an earlier tiara. Getty Images Queen Mary wearing the Lover’s Knot Tiara. In 1981, the Queen reportedly loaned the Lover's Knot Tiara to Princess Diana as a wedding gift. Getty Images Kate in the Lover's Knot tiara in 2016.