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Japanese Princess Mako (C) is welcomed by Bhutan's Princess Euphelma (L) at Paro International Airport in Paro on June 1, 2017, at the start of her nine-day official visit to Bhutan. Japanese Princess Mako, the oldest of Emperor Akihito's grandchildren, arrived for a nine-day official visit to Bhutan, during which she is expected to meet with Bhutan's King Jigme Khesar Namgyel Wangchuck and Queen Jetsun Pema. / AFP PHOTO / DIPTENDU DUTTA (Photo credit should read DIPTENDU DUTTA/AFP/Getty Images)

Japanese Princess Mako (C) is welcomed by Bhutan's Princess Euphelma (L) at Paro International Airport in Paro on June 1, 2017, at the start of her nine-day official visit to Bhutan.
Japanese Princess Mako, the oldest of Emperor Akihito's grandchildren, arrived for a nine-day official visit to Bhutan, during which she is expected to meet with Bhutan's King Jigme Khesar Namgyel Wangchuck and Queen Jetsun Pema. / AFP PHOTO / DIPTENDU DUTTA        (Photo credit should read DIPTENDU DUTTA/AFP/Getty Images)