PARIS, FRANCE - MAY 05: (L-R) Prince Charles de Bourbon Parme, Princess Constance de Bourbon Parme, their nephew Grand-Duc Heritier Guillaume and Grande-Duchesse Heritiere Stephanie De Luxembourg attend the "Revelations" Fair at Balcon d'Honneur du Grand Palais on May 5, 2017 in Paris, France. (Photo by Bertrand Rindoff Petroff/Getty Images)
PARIS, FRANCE - MAY 05: (L-R) Prince Charles de Bourbon Parme, Princess Constance de Bourbon Parme, their nephew Grand-Duc Heritier Guillaume and Grande-Duchesse Heritiere Stephanie De Luxembourg attend the "Revelations" Fair at Balcon d'Honneur du Grand Palais on May 5, 2017 in Paris, France. (Photo by Bertrand Rindoff Petroff/Getty Images)
PARIS, FRANCE - MAY 05: (L-R) Grande-Duchesse Heritiere Stephanie De Luxembourg, Prince Edouard de Ligne La Tremoille and Princess Isabella de Ligne La Tremoille attend the "Revelations" Fair at Balcon d'Honneur du Grand Palais on May 5, 2017 in Paris, France. (Photo by Bertrand Rindoff Petroff/Getty Images)
PARIS, FRANCE - MAY 05: Grande-Duchesse Heritiere Stephanie De Luxembourg presents the "Revelations" Fair at Balcon d'Honneur du Grand Palais on May 5, 2017 in Paris, France. (Photo by Bertrand Rindoff Petroff/Getty Images)
PARIS, FRANCE - MAY 05: Grand-Duc Heritier Guillaume, Grande-Duchesse Heritiere Stephanie De Luxembourg, Ambassador of Luxembourg to France, Paul Duhr and his wife Valerie attend the "Revelations" Fair at Balcon d'Honneur du Grand Palais on May 5, 2017 in Paris, France. (Photo by Bertrand Rindoff Petroff/Getty Images)
