LONDON - Britain's Prince William and his wife Kate are expecting their second child, Kensington Palace announced on Monday less than 14 months after the birth of Prince George.
The couple, known as the Duke and Duchess of Cambridge, are "very pleased" and William's grandmother Queen Elizabeth II is "delighted", a spokesman said.
Kate, 32, is again suffering from hyperemesis gravidarum, a form of very acute morning sickness that caused her to be hospitalised when she was pregnant with George.
She is currently being treated by doctors at the couple's London home in Kensington Palace, the spokesman said.
The duchess was due to attend an official engagement in Oxford on Monday but cancelled because of her illness and William, also 32, attended alone.
"Their Royal Highnesses The Duke and Duchess of Cambridge are very pleased to announce that The Duchess of Cambridge is expecting their second child," the palace announced.
"The Queen and members of both families are delighted with the news." Prime Minister David Cameron was among the first to offer his congratulations to the couple, saying he was "delighted by the happy news that they're expecting another baby".
'Heir and spare'
William and Kate's first child, George Alexander Louis, was born on July 22, 2013 in London's St. Mary's Hospital, weighing eight pounds and six ounces (3.8 kg).
As third in line to the throne and the first child of a celebrity couple, George's arrival sparked a media frenzy and prompted messages of goodwill from around the world.
The new baby will be fourth in line to the throne, pushing William's younger brother Prince Harry down the line of succession into fifth place.