Prince Louis was caught trying to lend his father a helping hand as he tried to brush something off Prince William’s jacket while watching VE Day celebrations on Monday, 5 May. The seven-year-old, seated next to his father — who was in his military uniform — cheekily turned to him and began brushing down the shoulder of his jacket.

Louis was seated between William, 42, and older brother Prince George, 11. The siblings both wore suits with ties. Kate Middleton and Princess Charlotte, 10, sat beside the three boys in the front row.