Britain's Queen Elizabeth II and Britain's Prince Philip, Duke of Edinburgh wave to guests as they are followed in a convoy by Britain's Prince William, Duke of Cambridge, Britain's Catherine, Duchess of Cambridge and Britain's Prince Harry on The Mall as they drive past guests attending the Patron's Lunch, an event to mark her official 90th birthday in London on June 12, 2016. Up to 10,000 people are expected to attend the Patron's Lunch along with the monarch, her husband Prince Philip, Prince William and Prince Harry. / AFP / POOL / IAN VOGLER (Photo credit should read IAN VOGLER/AFP/Getty Images)
