The Imperial family on Monday celebrated the second birthday of Princess Aiko, the daughter of Crown Prince Naruhito and Princess Masako.

According to the Imperial Household Agency, Princess Aiko is now able to run and jump, has learned the names of people and animals, and often plays with her mother by saying the alphabet.

The Crown Prince and Princess took their daughter to see Emperor Akihito and Empress Michiko at the Imperial Palace in the morning to report on her second birthday.

Princess Aiko is now 85.4 cm tall and weighs 12.5 kg, Imperial Household officials said. She was 74.2 cm tall and weighed 9.32 kg when she was 1 year old.