King Charles III’s latest appearance with Prince William at the Countdown to COP30 event at the Natural History Museum in London on October 9 sparked concern after several people noticed that the monarch was looking frail.
“His suit was hanging off him,” one source told Rob Shuter’s ShuterScoop. “He looked like a man fighting something bigger than he’s letting on.”

James Whatling
In the images shared by E! Online, Charles, 76, wore a navy pinstripe suit as he stood alongside William, 43. The appearance follows reports that the King has reduced his workload while continuing cancer treatment announced earlier this year.
The event was held just weeks before William is set to attend the COP30 World Leaders Summit in Belém, Brazil, and it marked a rare joint appearance for the father and son. The pair toured exhibits focused on sustainability and met with Brazilian officials to discuss the upcoming climate conference, a cause that has consistently been important to Charles over the years.

James Whatling
However, the focus quickly shifted from their environmental mission to Charles’ frail frame. The king, who revealed his cancer diagnosis in early 2024, has significantly reduced his public appearances and has left William to take on more of the royal workload.
William’s upcoming solo trip to Brazil is possibly being seen as another sign that the Prince of Wales is quietly preparing for a larger role, despite Buckingham Palace’s insistence that Charles is in good health.
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