Japan's Princess Kako, the second daughter of Prince Akishino and Princess Kiko, looks at a bass drum shaped bonbonniere at the Museum of the Imperial Collections in Tokyo, December 19, 2014, in this handout picture released by the Imperial Household Agency of Japan. Kako, a granddaughter of Emperor Akihito and Empress Michiko, celebrates her 20th birthday on December 29, 2014. Picture taken December 19, 2014. REUTERS/Imperial Household Agency of Japan/Handout via Reuters (JAPAN - Tags: ROYALS PROFILE) ATTENTION EDITORS - THIS PICTURE WAS PROVIDED BY A THIRD PARTY. REUTERS IS UNABLE TO INDEPENDENTLY VERIFY THE AUTHENTICITY, CONTENT, LOCATION OR DATE OF THIS IMAGE. FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS PICTURE IS DISTRIBUTED EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS