lovers' knot

Middleton's hands are gently clasped in front of her, and she is shown wearing a pin that belonged to the late Queen Elizabeth II as well as the Queen Mary’s Lover's Knot Tiara, which was often worn by Prince William's late mother, Princess Diana.

Catherine wore a shimmering pale pink dress by Jenny Packham and the Lover's Knot Tiara, often worn by Diana, Princess of Wales.

But at Hampton Court, in London, visitors can still see empty spots where they were chiseled away, along with a few examples that were overlooked, still connected with a lover’s knot.

The Duchess of Cambridge subtly honored her late mother-in-law Princess Diana at the 150-person soiree, sporting the Lover’s Knot tiara, which was known to be one of the royal’s favorite pieces.

The Duchess of Cambridge was all smiles at a white tie affair at Buckingham Palace Tuesday evening, looking radiantly regal in one of her “favorite” tiaras – the Lover’s Knot – which was once similarly favored by her late mother-in-law, Princess Diana.