In Photos: Princess Mako over the years

Princess Mako walks about at her residence in Minato Ward, Tokyo, in October 1992, shortly before her first birthday, as her mother Princess Kiko looks on, in October 1992. (Photo courtesy of the Imperial Household Agency)

Princess Mako, left in the front row, is pictured with her family at their residence in Minato Ward, Tokyo, in November 1997 when she was 6. (Photo courtesy of the Imperial Household Agency)

Prince Akishino, Princess Kiko and their daughter Princess Mako leave Gakushuin Kindergarten after a graduation ceremony on March 15, 1998. (Pool photo)

Prince Akishino, Princess Kiko and their daughter Princess Mako head to Gakushuin Primary School for her entrance ceremony on April 10, 1998. (Mainichi)

Princess Mako is seen after graduating from Gakushuin Primary School on March 18, 2004.

Princess Kiko and Princess Mako head to an entrance ceremony at Gakushuin Girls' Junior High School on April 6, 2004. (Pool photo)

Princess Mako, right, and her sister Princess Kako visit their mother Princess Kiko at a hospital in Minato Ward, Tokyo, after she gave birth to Prince Hisahito in September 2006 when Princess Mako was 14. (Mainichi)

From left, Princess Mako, Princess Kako and their mother Princess Kiko are seen at an entrance ceremony at Gakushuin Girls' Junior and Senior High School on April 6, 2007, as Princess Mako enters high school and Princess Kako enters junior high school. (Pool photo)

Princess Mako is seen before attending an entrance ceremony at International Christian University on April 2, 2010. (Pool photo)

Princess Mako studies a sculpture carved by Takamura Koun at the Museum of the Imperial Collections. (Photo courtesy of the Imperial Household Agency)

Princess Mako speaks at a news conference at her residence in Tokyo's Minato Ward on Oct. 16, 2011. (Pool photo)

Princess Mako is seen in front of the Imperial Palace after greeting her grandparents Emperor Akihito and Empress Michiko on the occasion of her coming-of-age ceremony on Oct. 23, 2011. (Pool photo)

Princess Mako, right, harvests vegetables with Princess Kako and Prince Hisahito on the grounds of their residence in Minato Ward, Tokyo, in August 2014 when she was 22. (Photo courtesy of the Imperial Household Agency)

Princess Mako, center, visits the Flower Exhibition in the Bhutan capital of Thimphu with Bhutan's King Jigme Khesar Namgyel Wangchuck, front right, and Queen Jetsun Pema, left, on June 4, 2017. (Pool photo)

From left, Bhutan's King Jigme Khesar Namgyel Wangchuck, Queen Jetsun Pema and Japan's Princess Mako are seen at the Flower Exhibition in the Bhutan capital of Thimphu on June 4, 2017. (Pool photo)

Princess Mako is pictured on Sept. 3, 2017, as she heads to the Imperial Palace. (Mainichi)

Princess Mako, right, and Kei Komuro are pictured in a news conference on their engagement at Akasaka Estate in the Motoakasaka district of Tokyo on the afternoon of Sept. 3, 2017. (Pool photo)