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Britain's Catherine, Duchess of Cambridge, waves to the crowd as she arrives for the Order of The Garter Service at Windsor Castle in Windsor, west of London on June 13, 2016. The Order of the Garter is the oldest and most senior Order of Chivalry in Britain, established by King Edward III nearly 700 years ago. / AFP / POOL / Matt Dunham (Photo credit should read MATT DUNHAM/AFP/Getty Images)

Britain's Catherine, Duchess of Cambridge, waves to the crowd as she arrives for the Order of The Garter Service at Windsor Castle in Windsor, west of London on June 13, 2016.
The Order of the Garter is the oldest and most senior Order of Chivalry in Britain, established by King Edward III nearly 700 years ago. / AFP / POOL / Matt Dunham        (Photo credit should read MATT DUNHAM/AFP/Getty Images)