The actor met the prince and his wife, Kate Middleton, at the London premiere of 'Top Gun: Maverick.'
Following the death of Queen Elizabeth II, William and Kate are now the Prince and Princess of Wales.
Kanye's message came a week after Queen Elizabeth II's funeral.
King Charles III poses for his first official portrait as the new British monarch. The image debuts after Queen Elizabeth II's funeral.
John Boyega weighs in on 'Star Wars: The Last Jedi' set on ‘Watch What Happens Live With Andy Cohen,’ airing weeknights on Bravo.
The monarch has a photo of Queen Elizabeth II and Prince Philip behind him in a newly released pic.
The royal brothers filmed a cameo in 'Star Wars: The Last Jedi' that was later cut.
'Dogs are very perceptive,' trainer Dr. Roger Mugford tells ET.
The Prince and Princess of Wales stepped out for their first engagement since Queen Elizabeth's funeral.
Prince William and Kate Middleton speak with staff who helped organize Queen Elizabeth II's funeral.
Prince William and Kate Middleton's eldest son, Prince George, was caught sticking his tongue out amid Queen Elizabeth's funeral.
'The New Royals' author Katie Nicholl chats with ET about Queen Elizabeth II's fashion and how her style inspired other royals.
Grant Harrold dispelled several "strange" stories he's heard about the new monarch.
Former royal butler Grant Harrold addresses rumors about King Charles, including claims he needs a specific temperature for his baths.