WINDSOR, ENGLAND - MAY 15: Camilla Duchess Of Cornwall arrives at Queen Elizabeth II's 90th Birthday Celebrations at Home Park, Windsor on May 15, 2016 in Windsor, England.The show has run over four nights to celebrate the Queen turning 90. The show features 1,500 performers, 900 horses and tells the story of the life of the Queen. Members of the Royal Family have attended the show each night and the Queen is attending the final evening (Photo by Ben A. Pruchnie/Getty Images)
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Getty Images Entertainment Ben A. Pruchnie