Duchess Kate wore the Queen's diamond earrings to see 'Dear Evan Hansen' with Prince William

By Heather Cichowski, with files from Fiona Ward

Duchess Kate looked stunning when she stepped out with Prince William to attend a performance of Dear Evan Hansen at the Noël Coward Theatre in London on Feb. 25. Royals fans were captivated by her black tweed dress by London-based brand Eponine, and the details of the whole look didn't go unnoticed. Kate personalized the dress by changing the crown buttons and added some sparkle by wearing the Queen's earrings.

There were so many details to take in on Kate's elegant ensemble! Photo: © Karwai Tang/WireImage

There was plenty of shimmer in the mom of three's outfit, including her silver clutch and coordinating Jimmy Choo heels. She added even more twinkle with Her Majesty's ornate diamond chandelier earrings.

The Duke and Duchess of Cambridge were so sophisticated. Photo: © Chris Jackson/Getty Images

Kate has worn these earrings on numerous occasions, including the Queen's diplomatic reception in 2013 and for a state banquet for China's President Xi Jinping in 2015. More recently, the duchess showcased them at the 2017 Royal Variety Performance and the 2018 Tusk Conservation Awards.

A pregnant Kate sparkled at the 2017 Royal Variety Performance in a baby blue Jenny Packham dress with the Queen's earrings. Photo: © Karwai Tang/WireImage

Similarly, Kate has donned the Queen's striking teardrop earrings to several events.

MORE: Duchess Kate is a vision in a black tweed dress as she and Prince William see 'Dear Evan Hansen'

Eagle-eyed royals watchers also noticed Kate altered the buttons on her Eponine dress. HELLO! UK pointed out the sophisticated frock originally featured crown buttons, according to the brand's website.

Her shoes shimmered! Photo: © Karwai Tang/WireImage

Kate elected to change the crown buttons for a more formal bejewelled design. The new buttons helped elevate the look for the evening event and they also showcased Kate's flair for personalization.

The duchess is famous for rewearing items in her closet. When she does, she sometimes does subtle alterations to make the looks feel like new! For example, at the 2020 BAFTAs Kate rewore an opulent custom Alexander McQueen gown we last saw her wear in Malaysia in 2012. She tweaked the style by altering the sleeve to include a shoulder pad.

PHOTOS: Duchess Kate sprints and has a judo lesson at SportsAid event in London

The day after taking in Dear Evan Hansen, the mom of three stepped out on Feb. 26 to visit the London Stadium for a SportsAid event. She was gorgeous in green in a fitted knit top and Zara culottes. Duchess Kate accessorized with vegan Marks & Spencer sneakers and her favourite Siren Wire Earrings in green onyx by Monica Vinader.

Kate topped her casual-chic green ensemble with a navy blue blazer from Canadian brand Smythe! Photo: © Yui Mok - WPA Pool/Getty Images

Prior to her sprinting race and a judo lesson, the Duchess of Cambridge was seen in a navy blue blazer from one of her favourite Canadian labels, Smythe.

In the afternoon, the Duchess of Cambridge had a secret second engagement involving Early Years at Kensington Palace, according to the Court Circular.

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