Empress Michiko of Japan with her daughter Sayako, Princess Nori, in the grounds of the palace in Tokyo, Japan, around the time of her 36th birthday, 26th October 1970.

Empress Michiko of Japan with her daughter Sayako, Princess Nori, around the time of her 35th birthday in Tokyo, Japan, October 1969.

In this photo released by the Imperial Household Agency, Emperor Akihito and Empress Michiko stand together by Sokintei arbor during their stroll at Fukiage Garden in the Imperial Palace on a photoshoot held on November 29, 2010 at the...その他

Emperor Akihito Of Japan And His Wife Empress Michiko Shaking Hands With Children Who Have Gathered To Greet Them At Cardiff Castle, Wales.

Princess Diana In Tokyo Meeting The Emperor Akihito And Empress Michiko Of Japan.

Princess Michiko of Japan, wife of Crown Prince Akihito.

Japan's Emperor Akihito and Empress Michiko wave to well-wishers from the balcony of the Imperial Palace in Tokyo on January 2, 2018. / AFP PHOTO / Kazuhiro NOGI

Emperor Akihito, Empress Michiko and royal family members walk toward guests during the Autumn Garden Party at the Akasaka Imperial Garden on November 9, 2017 in Tokyo, Japan.

Emperor Akihito and Empress Michiko talk to workers at Mitsukoshi Isetan Soleil Ochiai Center on December 8, 2017 in Tokyo, Japan. The royal couple visit a factory where disabled people are working coinciding with the Week for Persons...その他