The “healthy” remark was widely interpreted as a reference to the princess’s recent battle with cancer. Kate revealed her diagnosis in March 2024 and confirmed she was in remission in January this year.

Reaction to Trump’s choice of words was swift. Social media users called the comments “wildly inappropriate,” with one writing: “It’s good to see you looking healthy. That’s it. Full stop.” Others described the moment as “cringe-inducing,” while some noted King Charles appeared to laugh at his remarks.

Critics also highlighted that Trump referred to only “one son” of the King, which many took as a subtle dig at Prince Harry.

This is not the first time Trump has been accused of breaching royal etiquette. During his previous state visit in 2018, he was criticised for walking in front of the late Queen Elizabeth II.