Japan is celebrating the news that Princess Kiko, wife of the emperor's second son, has given birth to a baby boy.
The baby - the first male to be born into the imperial family for more than four decades - is now third in line to the Japanese throne.
The pregnancy, which put on hold plans to revise the constitution to allow women to ascend the throne, has attracted enormous attention in Japan.
Print and broadcast media were dominated by the birth, which sparked celebrations in the capital, Tokyo.
Children at a school in Tokyo prepared to fly a traditional carp streamer to mark the birth of the baby boy.
Both mother and baby were said to be doing well. The baby will be named by his father, Prince Akishino, in a ceremony next week.