LUXEMBOURG - JUNE 22: Prince Guillaume of Luxembourg and Princess Stephanie of Luxembourg visit Esch-sur-Alzette for National Day on June 22, 2017 in Luxembourg, Luxembourg. (Photo by Sylvain Lefevre/Getty Images)
LUXEMBOURG - JUNE 22: Prince Guillaume of Luxembourg and Princess Stephanie of Luxembourg visit Esch-sur-Alzette for National Day on June 22, 2017 in Luxembourg, Luxembourg. (Photo by Sylvain Lefevre/Getty Images)
LUXEMBOURG - JUNE 22: Prince Guillaume of Luxembourg and Princess Stephanie of Luxembourg visit Esch-sur-Alzette for National Day on June 22, 2017 in Luxembourg, Luxembourg. (Photo by Sylvain Lefevre/Getty Images)
LUXEMBOURG - JUNE 22: Prince Guillaume of Luxembourg and Princess Stephanie of Luxembourg visit Esch-sur-Alzette for National Day on June 22, 2017 in Luxembourg, Luxembourg. (Photo by Sylvain Lefevre/Getty Images)
LUXEMBOURG - JUNE 22: Prince Guillaume of Luxembourg and Princess Stephanie of Luxembourg visit Esch-sur-Alzette for National Day on June 22, 2017 in Luxembourg, Luxembourg. (Photo by Sylvain Lefevre/WireImage)
