Prince William told a young fan to imagine him naked.
The 26-year-old royal met Jasmine Edwards, 18, at a reception to mark the 40th anniversary of homeless charity Centrepoint, but she struggled to speak to him because of her stammer.
Keen to help her relax, the prince laughed as he said to her: “Don’t worry about it, just imagine me naked.”
When asked about the encounter afterwards, Jasmine – who was helped by the charity when she was living in a children’s home – said: “Well I imagined him naked of course!
“I wanted to tell him about how incredible Centrepoint had been, getting me onto a gardening course and finding me accommodation.
“I couldn’t quite believe what he said but I really liked talking to him and hope I can meet him again.”
Centrepoint was one of the first charities William worked with and the organisation – which assists the homeless – was also a favourite of his mother, the late Princess Diana.
In a speech at the private reception, which was held at the HSBC Private Banking Headquarters in London, William paid tribute to the “remarkable” organisation.
He said: “I remember my mother taking myself and Harry to visit it when we were children.
“I was much younger, better looking and naive then, but it helped to open my eyes to the world so many young London people face.”