The Princess of Wales, 41, debuted a new pair of statement pearl earrings as she appeared on the Whitehall balcony with Queen Camilla.
The mother-of-three looked elegant in a black military-inspired Catherine Walker coat – which she first wore in 2019 – and a matching hat with a large bow.
However, it was the royal’s statement pearl earrings – featuring the Prince of Wales feather design – which really caught the attention of royal fans.
On X, formerly known as Twitter, royal fan Giorgia pointed out how similar Kate’s earrings are to a brooch once belonging to the Queen.
The Italian social media user- who runs the account CoutureAndRoyals – said: ‘I think that The Princess of Wales is wearing earrings from a same demi-Parure to Queen Elizabeth’s Diamond & Pearl Leaf brooch.
‘We have never seen them before, or knew they existed, but the shape is the same of the leaves of the brooch.’
The Queen wore the statement brooch – containing three large pearls surrounded by diamond leaves – on her 73rd birthday during a visit to Seoul in South Korea.
In response, one follower gushed: ‘My mind went to the same brooch!!’
Another suggested: ‘Perhaps the brooch is detachable and the earrings are leaves from the brooch?’
This wouldn’t be the first time the Princess of Wales has personalised a piece of jewellery from the royal collection.
In 2019, the then Duchess of Cambridge wore a pair of diamond and sapphire earrings once belonging to Princess Diana to attend the National Emergencies Trust launch.
After inheriting the priceless earrings, the royal turned her late mother-in-law’s earrings into chic drops – where Diana once wore them as studs.
The Queen’s stunning brooch features three pearls placed in the centre of a pave-set leaf, made partly from yellow gold.
Kate first wore the piece alongside Princess Diana’s diamond and pearl drop earrings for a trip to Belgium where she and her husband Prince William visited the Commonwealth War Graves Commisions’s Tyne Cot Cemetery in 2017.
The Princess of Wales also wore the brooch five years later at a special service to commemorate the start of the Queen’s lying-in-state at Westminster Hall.
On the lapel of her Catherine Walker military-inspired coat, Kate opted for a three red poppies to pay tribute to all those who have lost their lives in conflict while fighting for their country.
The mother-of-three also wore a silver brooch, which she was awarded when she became Commodore-in-Chief of the Fleet Air Arm earlier this year.
The royal styled her hair in a chic updo and completed her ensemble with a large black hat, with an elegant velvet bow.
The royals maintained a period of two minutes’ silence to mark the fallen soldiers.
As the royal family attended the Cenotaph to take part in the service, they joined army officers and prominent UK politicians.
Among them were prime minister Rishi Sunak and leader of the opposition, Sir Keir Starmer.
Former UK prime ministers including Liz Truss, Boris Johnson, Theresa May, David Cameron, Gordon Brown, Tony Blair and Sir John Major were also present.
Meanwhile across the pond, Prince Harry and Meghan Markle have been paying tribute to veterans in the US and around the world this week.
On Thursday the Duke and Duchess of Sussex joined the Navy SEAL Foundation for the official opening of a new training base, known as the ‘West Coast Warrior Fitness Programme’ facility, ahead of Veterans Day on November 11.
The couple were meeting veterans, servicemen and women and and their loved-ones at Camp Pendleton.
Wreaths of poppies have already been taken through the gates of Downing Street ahead of the service as a long line of veterans and armed forces personnel members – snaking from near the gates of Downing Street to down past Horse Guards Parade – has assembled.