As the King and the Queen made a surprise appearance on the hit US show American Idol, the King shared a joke with Lionel Richie.
Following his performance at the coronation concert on Sunday night, the King jokingly asked the star if he was going to be using one of the halls at Windsor Castle "all night long".
After cracking the joke, the chuckling King added: "I just wanted to check how long you'll be using this room for?"
He also thanked Katy Perry and Lionel Richie for their performance, which was watched by the Royal Family and a 20,000-strong crowd outside Windsor Castle.
"Thank you so much for your brilliant performance, and Katy, it was wonderful, it really was. A great treat to have you both here," the King said.
The Queen also praised the pair, adding: "Fantastic, absolutely fantastic."
The King and Queen were joined by about 20,000 members of the public at
The musical extravaganza opened with Feel The Love by Rudimental - a track handpicked by the King himself. The King and Queen were joined by about 20,000 members of the public at the event.
Top Gun star Tom Cruise called the King his “wingman” in his pre-recorded video at the Windsor show.
