Japan's Princess Kako visits Emperor Akihito

Japan's Princess Kako, the second daughter of Prince Akishino and Princess Kiko, in full dress leaves the Imperial Palace in Tokyo after meeting with the emperor and empress. (AFP)

Kako, a granddaughter of Emperor Akihito and Empress Michiko, celebrated her 20th birthday on December 29. (AFP)

(AFP)

Japan's Princess Kako, the second daughter of Prince Akishino and Princess Kiko, looks at an ornament depicting a figure "Bugaku dancer, Raryoo" at the Museum of the Imperial Collections in Tokyo. (Reuters)

Kako, a granddaughter of Emperor Akihito and Empress Michiko, celebrates her 20th birthday on December 29, 2014. (Reuters)