LUXEMBOURG - MAY 11: (NO UK SALES FOR 28 DAYS) Catherine, Duchess of Cambridge visits Place Clairefontaine during a one day visit to Luxembourg on May 11, 2017 in Luxembourg, Luxembourg. (Photo by Pool/Samir Hussein/Samir Hussein/WireImage)
LUXEMBOURG - MAY 11: (NO UK SALES FOR 28 DAYS) Catherine, Duchess of Cambridge visits Place Clairefontaine during a one day visit to Luxembourg on May 11, 2017 in Luxembourg, Luxembourg. (Photo by Pool/Samir Hussein/Samir Hussein/WireImage)