Danish Crown Prince Frederik (R) and his wife Crown Princess Mary (C) is welcomed by Japanese Crown Prince Naruhito (L) upon their arrival for a dinner at the Akasaka Palace in Tokyo on March 28, 2015. The Danish royal couple are on a three-day visit to promote Greenland. AFP PHOTO / POOL / Toru YAMANAKA (Photo credit should read TORU YAMANAKA/AFP/Getty Images)

Danish Crown Prince Frederik (R) and his wife Crown Princess Mary (C) is welcomed by Japanese Crown Prince Naruhito (L) upon their arrival for a dinner at the Akasaka Palace in Tokyo on March 28, 2015. The Danish royal couple are on a three-day visit to promote Greenland.    AFP PHOTO / POOL / Toru YAMANAKA        (Photo credit should read TORU YAMANAKA/AFP/Getty Images)