LUXEMBOURG - MAY 11: Catherine, Duchess of Cambridge with Henri, Grand Duke of Luxembourg and Princess Alexandra of Luxembourg and Maria Teresa, Grand Duchess of Luxembourg and Stephanie, Hereditary Grand Duchess of Luxembourg with Prince Guillaume, Hereditary Grand Duke of Luxembourg at the Grand Ducal Palace during a one day visit to Luxembourg on May 11, 2017 in Luxembourg, Luxembourg. (Photo by Mark Cuthbert/UK Press via Getty Images)
