CAMBERLEY, UNITED KINGDOM - AUGUST 11: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Grand Duchess Maria Teresa of Luxembourg and Grand Duke Henri of Luxembourg attend the Sovereign's Parade at the Royal Military Academy Sandhurst on August 11, 2017 in Camberley, England. The Sovereign's Parade takes place in the Old College Square at Sandhurst's Royal Military Academy at the end of each term and marks the passing out of Officer Cadets who have completed the commissioning course. Grand Duke Henri graduated from the Royal Military Academy in 1975 and today his son Prince Sebastien of Luxembourg was one of the graduating Officer Cadets. (Photo by Max Mumby/Indigo/Getty Images)