Article continues below advertisementDuring a star-studded London gala on Monday, May 11, rock legend Sir Rod Stewart praised King Charles III for how he handled President Donald Trump during a recent state visit, calling Trump a "little ratbag" to the monarch's face.The exchange occurred during a receiving line at the Royal Albert Hall in London, where celebrities gathered to celebrate the 50th anniversary of The King's Trust, and went viral when shared by Rebecca English, Daily Mail's royal editor.While shaking the King's hand, Stewart, 81, remarked, "May I say, well done in the Americas.