Kate wears Princess Diana's favourite tiara at event hosted by the Queen


Her Majesty welcomed ambassadors and high commissioners to the United Kingdom, and government officials, for the annual Diplomatic Reception. Several core members of the royal family stepped out for a glamorous evening at the Diplomatic Reception in honor of members of the Diplomatic Corps in London, England.

Kate was in attendance with Prince William, 37, at the annual Diplomatic Reception at Buckingham Palace. Apart from Kate Middleton, Prince William and Queen Elizabeth, Prince Charles and Camilla, Duchess of Cornwall, were also present at the event.

Kate Middleton oozed elegance in a long-sleeve navy velvet Alexander McQueen gown with diamonds frosting her neck. Also known as Cambridge Lover's Knot tiara, the intricate headpiece was first owned by Queen Mary in the early 1900s and was gifted to Princess Diana in 1981.

But the standout piece of Kate's outfit was a necklace borrowed from the Queen's personal jewellery collection. She wore the Nizam of Hyderabad necklace to emphasising on the sweetheart neckline.

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The Duchess of Cornwall opted for a cream embroidered gown by Bruce Oldfield, a diamond Boucheron tiara and pearl choker and pearl earrings on Wednesday.

Middleton also wore a sash and medals signifying honours bestowed to her by the Queen.

Her Majesty stood out in a white gown designed by her senior dresser Angela Kelly and the Vladimir tiara, with emerald drops instead of its usual pearls. Many royal fans were excited to see Kate wear her favourite crown, the Cambridge Lover's Knot tiara, but they were quick to notice she debuted a sparkly new diamond ring with the Queen's necklace!

© WPA Pool - Getty Images At a Buckingham Palace banquet for a USA state visit in June 2019.