Britain's Queen Elizabeth II (C) mingles with guests attending a garden party in the grounds of Buckingham Palace in central London on May 10, 2016. / AFP / POOL / LEON NEAL (Photo credit should read LEON NEAL/AFP/Getty Images)
Britain's Queen Elizabeth II (C) mingles with guests attending a garden party in the grounds of Buckingham Palace in central London on May 10, 2016. / AFP / POOL / LEON NEAL (Photo credit should read LEON NEAL/AFP/Getty Images)