Photos Photos Photo Special: Princess Aiko turns 15 Image 5 of 11 December 1, 2016 Princess Aiko talks with her father Crown Prince Naruhito about her school trip at their residence in Tokyo's Minato Ward in this file photo taken on Nov. 23, 2016. (Courtesy of the Imperial Household Agency) Princess Aiko talks with her father Crown Prince Naruhito about her school trip at their residence in Tokyo's Minato Ward in this file photo taken on Nov. 23, 2016. (Courtesy of the Imperial Household Agency) Crown Prince Naruhito and his daughter Princess Aiko smile for a picture taken on Nov. 23, 2016, at their residence in Tokyo's Minato Ward. (Courtesy of the Imperial Household Agency) Crown Prince Naruhito and his daughter Princess Aiko are seen together at their residence in Tokyo's Minato Ward in this file photo taken on Nov. 23, 2016. (Courtesy of the Imperial Household Agency) Princess Aiko talks with her father Crown Prince Naruhito about her school trip at their residence in Tokyo's Minato Ward in this file photo taken on Nov. 23, 2016. (Courtesy of the Imperial Household Agency) Princess Aiko talks with her father Crown Prince Naruhito about her school trip at their residence in Tokyo's Minato Ward in this file photo taken on Nov. 23, 2016. (Courtesy of the Imperial Household Agency) Princess Aiko is seen with her cat Seven at their residence in Tokyo's Minato Ward in this file photo taken on Nov. 23, 2016. (Courtesy of the Imperial Household Agency) Princess Aiko is seen with her cat Seven at their residence in Tokyo's Minato Ward in this file photo taken on Nov. 23, 2016. (Courtesy of the Imperial Household Agency) Princess Aiko is seen with her cat Seven at their residence in Tokyo's Minato Ward in this file photo taken on Nov. 23, 2016. (Courtesy of the Imperial Household Agency) Princess Aiko smiles for a photo taken on Nov. 23, 2016, at her residence in Tokyo's Minato Ward. (Courtesy of the Imperial Household Agency) Princess Aiko smiles for a photo taken on Nov. 23, 2016, at her residence in Tokyo's Minato Ward. (Courtesy of the Imperial Household Agency) Princess Aiko is seen with her cat Seven at their residence in Tokyo's Minato Ward in this file photo taken on Nov. 23, 2016. (Courtesy of the Imperial Household Agency)