Japan's newborn Prince Hisahito sleeps in the arms of his mother Princess Kiko as they leave the Tokyo hospital, Sept. 15, 2006. The nine-day-old prince is the first boy to be born to the Japanese royal family in 41 years and third in line to the Chrysanthemum Throne.
Japan's Princess Kiko, right, and her husband, Prince Akishino, left, smile as they leaves a Tokyo hospital with their newborn son Prince Hisahito in Tokyo, Friday, Sept. 15, 2006.
Japan's newborn Prince Hisahito sleeps in the arms of his mother, Princess Kiko, as she leaves a Tokyo hospital with the infant prince Friday, Sept. 15, 2006.
Japanese Prince Akishino and his daughters, Princess Mako, left, and Princess Kako, center, arrive at Aiiku hospital in Tokyo on Sept. 6, 2006, to see Princess Kiko and the family's newborn baby boy.
Japan's Prince Akishino rides in a car on the way to the hospital where Princess Kiko gave a birth to a baby boy in Tokyo at 8:27 in the morning Sept. 6, 2006.
Prince Akishino, right, smiles as he is received by Masao Nakabayashi, president of Tokyo's Aiiku Hospital upon his arrival with his daughters Sept. 6, 2006. Akishino's wife, Princess Kiko, gave birth to the royal family's first male heir in four decades at that hospital, easing a succession crisis and quelling a fractious political debate over whether to allow women on the throne.
Japanese Princess Kiko, wife of Prince Akishino, arrives at a Tokyo hotel in this May 17, 2006 file photo.
Japan's Emperor Akihito and Empress Michiko wave to well-wishers during their visit in Sapporo, northern Japan, Sept. 6, 2006. Princess Kiko gave birth to a boy early that day, providing the centuries-old Chrysanthemum Throne with its first male heir in more than 40 years and defusing a looming succession crisis.
Here is another shot of Japanese Emperor Akihito and Empress Michiko, waving to well-wishers in Sapporo, Sept. 6, 2006, as they traveled Japan's northern island of Hokkaido.
Japan's Princess Kiko beams in her car as she is accompanied by her husband, Prince Akishino, as they arrive at a Tokyo hospital in this Aug. 16, 2006, file photo. Japan's Princess Kiko gave birth to a boy early Sept. 6, 2006, producing the royal family's first male heir to the throne in more than 40 years.
Japanese dancers perform to celebrate the birth of Princess Kiko's baby in front of a Tokyo's station Sept. 6, 2006. The banner in the background reads: "Congratulations on the birth of Imperial prince."
Japanese women dance in celebration at Tokyo's Mejiro Station after Princess Kiko gave birth to a baby boy Sept. 6, 2006 in Tokyo.
A Japanese woman smiles as she reads a morning newspaper reporting on the birth of a prince in downtown Tokyo on Sept. 6, 2006. Princess Kiko gave birth to the imperial family's first boy in four decades.
A woman reads an extra edition featuring the news of Princess Kiko giving birth to a baby boy at Tokyo's Mejiro Station in Tokyo on Sept. 6, 2006.
A group of well-wishers raise their hands in the air for banzai cheers to celebrate the birth of Japan's new prince in front of Imperial Palace in Tokyo on Sept. 6, 2006.
A pedestrian watches a TV report on the baby boy born to Princess Kiko and Prince Akishino, displayed in a window of a securities firm showing the morning's stock trading in downtown Tokyo on Sept. 6, 2006. Japanese business leaders are hailing the birth of the royal family's first boy in more than 40 years, an event that some forecasters say could give a multi-billion-dollar boost to the economy.
Aiiku Hospital Director Masao Nakabayashi, left, and Ichiro Kanazawa, medical supervisor of the Imperial Household, smile as they speak to media during a news conference on the birth of Japanese Princess Kiko's baby, at the Imperial Household Agency in Tokyo on Sept. 6, 2006.
Prince Akishino and his wife, Princess Kiko, chat as they send off Emperor Akihito and Empress Michiko, unseen, at Tokyo International airport in this May 7, 2005, file photo.