PRINCESS Kate delighted royal fans as she returned to duties today welcoming Qatar's Royal Family for a two-day state visit.
Eagle-eyed fans were quick to point out that the Princess of Wales, 42, made a sneaky outfit change during the outing - but did you spot it?
One royal wrote: “Don't miss the detail!! To join the rest of the Royal Family for the visit of the Buckingham Palace Picture Gallery, Princess Catherine has changed her boots into a pair of burgundy stiletto heels.”
The Princess of Wales was snapped beaming with doting husband Wills by her side as they welcomed Amir Sheikh Tamim and his wife Sheikha Jawaher.
Arriving by carriage, and dressed to combat the cold, Catherine, Princess of Wales, opted for a chic all-burgundy outfit.
Comprised of items she already had in her closet, she opted for her go-to favourite Alexander McQueen coat, which she teamed with leather gloves.
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But it was her knee-high Gianvito Rossi boots that grabbed attention.
Fashion expert Amber Graafland told Fabulous: “Joining the rest of the Royal Family at the Buckingham Palace Picture Gallery, and safely inside and out of the cold, Kate swapped her boots for a pair of elegant £650 Gianvito Rossi 'Gianvito 105' Pumps in Royale Burgundy Suede.
“Kate has long been a fan of the Italian footwear designer and was first spotted in a pair of their pumps in 2015.
“Owning several pairs in different colours, this timeless stiletto heel court has become one of her style signatures.
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“This simple shoe change transformed her outfit, taking it from day through to evening, and adding a more feminine edge.”
Royal fans approved of the subtle switch, with one saying: “Both perfect, the one for outside the other for indoor.”
Another added: “Boots for outdoors and heels for indoors, but if I am forced to say which one looks better regardless I would say the heels.”
It wasn’t the only part of her outfit which grabbed attention.
Princess Kate also paid a touching tribute to the late Queen.
Kate's sweet nod
In a sweet nod to Elizabeth II, the Princess of Wales wore one of her diamond and pearl necklaces.
It was the third time Kate made the heartfelt decision to pair the jewellery with her outfit.
The second time was when she wore it in memory of Queen Elizabeth at her funeral.
Kate first wore the breathtaking choker to Prince Philip’s funeral in 2021, adding a set of matching pearl drop earrings, which belonged to The Queen's collection too.
The choker-style necklace is a four strand diamond and pearl piece.
The Queen was pictured wearing the lavish accessory multiple times including at events such as state banquets.
While The Queen often wore the priceless necklace during the 1980s, she loaned the four-strand choker to Princess Diana for a state banquet in the Netherlands in 1982.
Kate's Christmas legacy
Later this week on Friday, the Princess of Wales will hold her Together At Christmas concert in Westminster Abbey.
She will attend with Prince William, their children Prince George, Princess Charlotte and Prince Louis, and other members of the royal family.
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Palace aides have said the service will “provide a moment to reflect upon the importance of love and empathy, and how much we need each other, especially in the most difficult times of our lives”.
It is expected to be extra special and poignant given Kate’s own struggles this year with cancer.
Timeline of Kate's health battle & recovery
JAN 16: Kate is admitted to the London Clinic for abdominal surgery
JAN 17: Kensington Palace announce the princess underwent abdominal surgery
JAN 18: William spends time at Kate's bedside
JAN 23: The princess' hospital stay passes one week
JAN 29: Kate leaves hospital
FEB 27: Prince William pulls out of service last-minute due to 'personal matter', sparking wave of unfounded conspiracy theories about Kate’s health
MAR 4: Princess pictured in the car with mum Carole on the Windsor estate
Mar 10: Royal posts a sweet snap of her and the kids for Mother's Day – then fans started spotting flaws, and massive agencies put out 'kill notice' on photo
Mar 11: Kate admits she edited photo, and is snapped in car with William
Mar 16: Royal fans spot the Princess at farm shop near Windsor
Mar 17: Onlookers see Kate watching her youngsters playing sport
Mar 18: The Sun exclusively published video of Kate and Wills from two days prior
Mar 22: Kate bravely reveals in an emotional video that she was given a shock cancer diagnosis
April 29: Kate and William mark 13th anniversary releasing unseen wedding photos
June 8: Kate does not attend Colonel's Review but pens letter to Irish Guards revealing: "I do hope that I am able to represent you all once again very soon"
June 15: Kate attends Trooping the Colour alongside her family
July 14: Kate attends the Wimbledon Men's Final with Princess Charlotte
August 11: Kate and William release video congratulating Team GB after the Paris Olympics
August 25: Kate is seen heading to church
September 9: Kate shares moving video revealing she has finished chemotherapy
October 15: Kate shares hand written note during Baby Loss Awareness Week