Kate Middleton, Prince William, King Charles and Queen Camilla joined other royals at a Service of Thanksgiving at Westminster Abbey on the 80th anniversary of VE Day. See photos of the event.

King Charles appeared to show a moment of frustration at the 80th anniversary commemoration of VE Day during a ceremony at Westminster Abbey in London.

As for King Charles, who wore a blue pinstriped suit for the event, he shared a heartwarming story about his late mother's VE Day celebrations, telling the audience Queen Elizabeth joined a conga line into Buckingham Palace and "sang 'til 2 a.m" to mark the end of World War II.