Luxembourg's Prime Minister Xavier Bettel (2ndL), his husband Belgian architecte Gauthier Destenay (L), Prince Guillaume, Hereditary Grand Duke of Luxembourg (R) and his wife Princess Stephanie, Hereditary Grand Duchess of Luxembourg pose as they arrive on May 17, 2017 for the screening of the film 'Ismael's Ghosts' (Les Fantomes d'Ismael) during the opening ceremony of the 70th edition of the Cannes Film Festival in Cannes, southern France. / AFP PHOTO / Alberto PIZZOLI (Photo credit should read ALBERTO PIZZOLI/AFP/Getty Images)
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AFP ALBERTO PIZZOLI