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Princess Paola of Belgium (later Queen Paola of Belgium), accompanied by a lady-in-waiting, attends the 'Novendiale' in memory of Pope John XXIII at St. Peter's Basilica, Vatican City, Rome, 17th June 1963. (Photo by Keystone/Hulton Archive/Getty Images)

Princess Paola of Belgium (later Queen Paola of Belgium), accompanied by a lady-in-waiting, attends the 'Novendiale' in memory of Pope John XXIII at St. Peter's Basilica, Vatican City, Rome, 17th June 1963. (Photo by Keystone/Hulton Archive/Getty Images)