The future King is regularly stopped and snapped by passers-by as he ventures out and about in London.
But Prince William thought he'd managed to fool customers in one of the capital's pubs into thinking they'd mistaken him for someone else.
When punters asked if it really was him as he walked into The Lighthouse in Battersea, the Prince pretended he was just a royal lookalike.
"I get that all the time," William said in good humour.
The 27-year-old's cover was soon blown, however, after the pub-goers spotted his bodyguards outside.
"He was very polite. We were amazed he was in our local," one customer said.
Photo: © Rex