In this undated photo released by Buckingham Palace on Friday, June 10, 2016, Britain's Queen Elizabeth II, left and Prince Philip, the Duke of Edinburgh pose for a photograph to mark the Queen's 90th birthday, in Windsor, England. The queen, Britain’s oldest and longest-reigning monarch, turned 90 on April 21. She usually celebrates her birthday privately, but this year’s milestone served as the jumping off point for weeks of celebrations. (Annie Leibovitz/ Buckingham Palace via AP)
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