Japanese Crown Prince Naruhito (L), Crown Princess Masako (R), and their daughter Princess Aiko (C) wave to the media during a visit to Shiosai Park in Hayama, in Kanagawa prefecture in suburban Tokyo on November 7, 2012. The family is here for a short vacation. AFP PHOTO / POOL / KAZUHIRO NOGI (Photo credit should read KAZUHIRO NOGI/AFP/Getty Images)
Japanese Princess Aiko (C), daughter of Crown Prince Naruhito and Crown Princess Masako, smiles as she takes part in a regular orchestra concert by the alumni of Gakushuin University in Tokyo on April 14, 2013. Her father Crown Prince Naruhito also joined the orchestra to play the viola, the first time the two played together in public. JAPAN OUT AFP PHOTO / JAPAN POOL via JIJI PRESS (Photo credit should read JAPAN POOL/AFP/Getty Images)
Japan's Princess Aiko (2nd R), daughter of Japanese crown Prince Naruhito performs group gymnastics with fellow students at the Gakushuin elementary school in Tokyo for her school's athletic festival on October 12, 2013. Crown Prince Naruhito and Crown Princess Masako attended the festival. AFP PHOTO / POOL / Yoshikazu TSUNO (Photo credit should read YOSHIKAZU TSUNO/AFP/Getty Images)
Japan's Princess Aiko (C) arrives with her parents Crown Prince Naruhito (L) and Crown Princess Masako to attend her graduation ceremony at the Gakushuin Primary School in Tokyo on March 18, 2014. AFP PHOTO / POOL / Toru Hanai (Photo credit should read TORU HANAI/AFP/Getty Images)
Japan's Princess Aiko (C), accompanied by her parents Crown Prince Naruhito (L) and Crown Princess Masako, answers a reporter's questions as they attend her entrance ceremony at the Gakushuin Girls' Junior High School in on April 6, 2014. AFP PHOTO / POOL (Photo credit should read TORU HANAI/AFP/Getty Images)
