A well-wisher broke an unwritten rule today as he put his arm around the Princess of Wales while taking a photo with her.
The royal fan approached Kate Middleton and grabbed her attention before asking her to take a picture together in Scarborough.
She had a conversation with the man before also putting her arm around him and smiling for the camera.
While there are no official codes of behaviour when meeting a member of the Royal Family, an unwritten rule means you should not go beyond a handshake.
However in recent years the younger royals have repeatedly engaged more with well-wishers in public, as Catherine did today.
Earlier this year, Prince William made a 66-year-old man emotional when he hugged him during a walkabout in Scotland.
Over summer, he also hugged the Lionesses after their historic Euros win.
On multiple occasions, Meghan Markle was hugged and kissed by royal fans, who shared conversations and photos with the Duchess of Sussex.
Meghan also hugged royal fans who gathered in Windsor after Queen Elizabeth II died in September.
Sophie Wessex was also pictured hugging a young boy who was holding a teddy bear in Manchester during a vigil for the late monarch.
Today, Prince William and Catherine visited the seaside town of Scarborough to launch funding to support young people's mental health.
William and Kate were greeted by a cheering crowd as they started their day at The Street - a community hub that supports local organisations to grow and develop their services.
Kate was wearing a camel-coloured overcoat over a similar coloured outfit, while William was sporting a burgundy jumper and blue shirt under a blue jacket.
The royal couple were in the North Yorkshire resort to engage with local organisations who will benefit from funding which has been created from a collaboration between The Royal Foundation of The Prince and Princess of Wales and the Two Ridings Community Foundation.
William and Kate began by meeting the grant panel of young people who had decided how the money should be allocated.
The Prince of Wales said: "Showing what can be done when a community comes together collaboratively is really something we'd like to follow on and be represented more widely across the country.
"You're leading where I hope others will follow."
Later, at The Rainbow Centre, William and Kate listened the stories of people who were being helped by the open-door support it provides to anyone in need in the town.
Talking to managers of the centre, he was told how the centre has seen a huge upsurge in demand for its service and how difficult it had been for many people to come forward for help.
William said he was worried about how many people were still living in isolation after the pandemic.
He told the group: "It worries me so much. Up and down the country people are still living in bubbles.
"Life has moved on for everyone else. It's been three or four years now. The mental health consequences of that?"
Steve Cottrell, 60, told the royal visitors how The Rainbow Centre had save his life after years on the streets.
"Without this place, I wouldn't be here," he said.