Princess of Wales!Kate Middleton is making her tiara debut

The royal, 40, sported her first tiara in nearly three years for Tuesday's state banquet at Buckingham Palace

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The banquet was held as part of the first state visit of King Charles III's reign, welcoming the President of South Africa, Cyril Ramaphosa, to the U.K

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Princess Kate wore a white gown by Jenny Packham paired with her go-to headpiece for such occasions: Queen Mary's Lover's Knot tiara

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With pearls hanging from diamond knots, the tiara was also a favorite of her mother-in-law, Princess Diana

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It is a replica of a tiara owned by Mary's grandmother, Princess Augusta of Hesse, the Duchess of Cambridge.

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Couple welcomed President Ramaphosa at the Corinthia Hotel on behalf of King Charles

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Along with King Charles and Queen Camilla, Kate and Prince William then participated in a carriage procession to Buckingham Palace

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