Princess Aiko, the only child of Emperor Naruhito and Empress Masako, turned 20 today. Princess Aiko was born on December 1, 2001. On the occasion of the 20th birthday of the Princess, several ceremonies will be held on December 5 (because of her university classes). In a ceremony, Princess Aiko will receive 'The Order of the Precious Crown'. By receiving that order, the Princess will be able to attend public activities. Princess Aiko is expected to attend New Year's Receptions as her first public activity.