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Queen Maxima of Netherlands and King Willem-Alexander pose in front of Rome City Hall after a meeting with Rome's mayor Virginia Raggi on June 20, 2017. / AFP PHOTO / Alberto PIZZOLI (Photo credit should read ALBERTO PIZZOLI/AFP/Getty Images)

Queen Maxima of Netherlands and King Willem-Alexander pose in front of Rome City Hall after a meeting with Rome's mayor Virginia Raggi on June 20, 2017.  / AFP PHOTO / Alberto PIZZOLI        (Photo credit should read ALBERTO PIZZOLI/AFP/Getty Images)

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Rome's mayor Virginia Raggi (C) welcomes King Willem-Alexander (L) and Queen Maxima of Netherlands as they arrive at Rome City Hall for a meeting on June 20, 2017 in Rome. / AFP PHOTO / Alberto PIZZOLI (Photo credit should read ALBERTO PIZZOLI/AFP/Getty Images)

Rome's mayor Virginia Raggi (C) welcomes King Willem-Alexander (L) and Queen Maxima of Netherlands as they arrive at Rome City Hall for a meeting on June 20, 2017 in Rome.  / AFP PHOTO / Alberto PIZZOLI        (Photo credit should read ALBERTO PIZZOLI/AFP/Getty Images)

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Italian Prime Minister Paolo Gentiloni (R) welcomes King Willem-Alexander (C) and Queen Maxima of The Netherlands before their meeting on June 20, 2017 at the Palazzo Chigi in Rome. / AFP PHOTO / Vincenzo PINTO (Photo credit should read VINCENZO PINTO/AFP/Getty Images)

Italian Prime Minister Paolo Gentiloni (R) welcomes King Willem-Alexander (C) and Queen Maxima of The Netherlands before their meeting on June 20, 2017 at the Palazzo Chigi in Rome. / AFP PHOTO / Vincenzo PINTO        (Photo credit should read VINCENZO PINTO/AFP/Getty Images)

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French President Francois Hollande (C) poses with King Willem-Alexander (L) and Queen Maxima of the Netherlands prior to visit the Louvre Museum as part of their state visit to France, on March 10, 2016 in Pari. This visit highlights the acquisition by the Museum of two Rembrandt's paintings in a conjoint operation with the Rijksmuseum and is part of a two days state visit. / AFP / POOL / ETIENNE LAURENT/POOL (Photo credit should read ETIENNE LAURENT/POOL/AFP/Getty Images)

French President Francois Hollande (C) poses with King Willem-Alexander (L) and Queen Maxima of the Netherlands prior to visit the Louvre Museum as part of their state visit to France,  on March 10, 2016 in Pari. 
This visit highlights the acquisition by the Museum of two Rembrandt's paintings in a conjoint operation with the Rijksmuseum and is part of a two days state visit. / AFP / POOL / ETIENNE LAURENT/POOL        (Photo credit should read ETIENNE LAURENT/POOL/AFP/Getty Images)

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Queen Maxima of Netherlands waves as she arrives at Rome City Hall for a meeting with Rome's mayor Virginia Raggi on June 20, 2017. / AFP PHOTO / Alberto PIZZOLI (Photo credit should read ALBERTO PIZZOLI/AFP/Getty Images)

Queen Maxima of Netherlands waves as she arrives at Rome City Hall for a meeting with Rome's mayor Virginia Raggi on June 20, 2017.  / AFP PHOTO / Alberto PIZZOLI        (Photo credit should read ALBERTO PIZZOLI/AFP/Getty Images)