WINDSOR, ENGLAND - APRIL 21: Queen Elizabeth II and Prince Philip, Duke of Edinburgh ride in an open top vehicle around Windsor on her 90th Birthday on April 21, 2016 in Windsor, England. (Photo by Samir Hussein/WireImage)
WINDSOR, ENGLAND - APRIL 21: Queen Elizabeth II and Prince Philip, Duke of Edinburgh ride in an open top vehicle around Windsor on her 90th Birthday on April 21, 2016 in Windsor, England. (Photo by Samir Hussein/WireImage)