'We could not be happier': Prince William on son's birth

An easel stands in the forecourt of Buckingham Palace in London on July 22, 2013, to announce the birth of a baby boy, at 4.24pm to Prince William and Catherine, Duchess of Cambridge, at St Mary's Hospital. Britain's Prince William expressed his joy
An easel stands in the forecourt of Buckingham Palace in London on July 22, 2013, to announce the birth of a baby boy, at 4.24pm to Prince William and Catherine, Duchess of Cambridge, at St Mary's Hospital. Britain's Prince William expressed his joy on Monday after his wife Kate gave birth to a baby boy, who becomes the third in line to the throne. -- PHOTO: AFP

LONDON (AFP) - Britain's Prince William expressed his joy on Monday after his wife Kate gave birth to a baby boy, who becomes the third in line to the throne.

"We could not be happier," the 31-year-old Duke of Cambridge said in a brief statement.