After Charles' cancer diagnosis: Brave Prince William jokes about private state of emergency. Prince William interrupted his time out for a charity gala and had emotional words about Princess Kate and King Charles.

But the heir to the throne also knows how to lighten the mood again. William is under enormous pressure after King Charles' austerity measures, because not many royals can step in for the monarch. William has resumed his duties for the gala dinner, "but you shouldn't expect to see him again so quickly afterwards," says an insider.