Queen Elizabeth II And The Duke Of Edinburgh Attend The Household Cavalry Standards Parade [Getty Images]

LONDON, ENGLAND - MAY 28: Queen Elizabeth II talks to Corporal of Horse Jamie Elliot (R) of the Household Cavalry, as the Prince Philip, Duke of Edinburgh and the Princess Anne, The Princess Royal meet other members during a special Garden Party for the Regiment on May 28, 2014 in London, Untied Kingdom. (Photo by John Stillwell - WPA Pool Getty Images)

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