The Prince and Princess of Wales were part of a star-studded congratulations video addressed to Team GB after the 2024 Paris Olympics, and eagle eyed viewers have spotted a change to Kate Middleton's wedding ring.
Team GB won a total of 65 medals at the iconic games, including 14 gold.
Stars such as David Beckham and Snoop Dogg also featured in the video message.
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Kate Middleton starts by saying: "From all of us watching at home, congratulations to Team GB."
William then proceeds to add: "Well done on all you've achieved, you've been an inspiration to us all."
And while the attention of many was on William's stubble - which many thought suited him very much - others turned their attention to Kate's jewellery.
Keen-eyes royal fans noticed that the ring Kate was wearing on her wedding finger is different to the one she usually wears.
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Some people have theorised that it's a new eternity ring, that perhaps features her birth stone, though Instagram users have noted that at this stage, it's hard to be definitive due to blurriness.
One person wrote: "Such a lovely message, they both look happy and relaxed. The sapphire anniversary/eternity band is a lovely alternative to her engagement ring. Nice to have a ring with a lower physical profile for everyday casual wear."
Another said: "That sapphire band sure looks far more practical for daily living, and it sure is pretty."
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A third added: "To me it looks as though the ring might be an eternity ring which includes her birthstone."
If Kate plans to keep on wearing the new ring when attending events, it's likely we will be able to put an end to the speculation and get a closer look at it.
A body language expert, Judi James, assessed the royal couple in the video and shared her insights with The Sun.
She said: "it is Kate who takes the lead in this clip, just as she often used to before her illness.
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"She speaks first and uses the animated, emphatic gesticulation to send out the stronger message of pride in Team GB."
She added: "Kate rewards us with her signature, symmetric smile here that suggests warm, regal pride in the team while William’s clamped lips and puckered smile also hints at pride in his wife as she steps into the lead again here."
Addressing William's debut of facial hair, she added: "With regards to William's pared back look, James added: "It implies both strength, support and toughness here as well as showing the kind of off-duty vibe that defines him in a new role as dedicated husband and dad under extraordinary circumstances."
Topics: Kate Middleton, News, Prince William, Royal Family, Olympics