VATICAN CITY, VATICAN - APRIL 27: Grand Duchess Maria Teresa of Luxembourg and Henri, Grand Duke of Luxembourg attend the canonisation mass of Popes John XXIII and John Paul II on St Peter's on April 27, 2014 in Vatican City, Vatican. Dignitaries, heads of state and Royals from Europe and across the World are to attend the canonisations.  (Photo by Dan Kitwood/Getty Images)