LONDON 香蕉视频直播� Prince William and his wife, the Duchess of Cambridge, will soon welcome a third child to the royal nursery.

Kensington Palace officials announced Monday that the former Kate Middleton is pregnant, but was not feeling well enough to attend an engagement later in the day.

As with her other two pregnancies, she is suffering from hyperemesis gravidarum, or acute morning sickness. She is being cared for at the royal couple香蕉视频直播檚 apartment in London香蕉视频直播檚 Kensington Palace.

The sickness failed to dampen the buoyant mood among the royals, however. Prince Harry will be bumped down in the line of succession, but was overjoyed, describing the news as 香蕉视频直播渇antastic,香蕉视频直播� and offering a thumb香蕉视频直播檚 up while on a visit to Manchester.

And asked how the Duchess was he said: 香蕉视频直播淚 haven香蕉视频直播檛 seen her for a while, but I think she香蕉视频直播檚 OK.香蕉视频直播�

No details were immediately available about when the third baby is due, though the duchess is less than 12 weeks pregnant. That would put the due date somewhere between mid-March and mid-June.

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William and Kate, both 35, already have two children: Prince George, 4, and Princess Charlotte, 2.

The announcement comes as the royal couple prepared to mark another milestone for their young family: Prince George is scheduled to start school Thursday at Thomas香蕉视频直播檚 Battersea in south London.

Their choice of a south London school indicated that the royal couple was settling into their Kensington Palace apartment, having moved recently from their Norfolk home, Anmer Hall.

Betting agencies were quick to start offering odds on possible names for the soon-to-be addition to the House of Windsor.

Paddy Power offered 8-to-1 odds on Alice and 10-to-1 odds on Arthur. Also popular is Diana, after Prince William香蕉视频直播檚 mother, particularly given the timing of the announcement.

William and Kate took a leading role in marking the 20th anniversary of Diana香蕉视频直播檚 death last week. The couple, joined by Prince Harry, toured the garden of Kensington Palace to commemorate the princess香蕉视频直播檚 contributions to their family and the many charities she supported.

香蕉视频直播淕iven the recent anniversary, there香蕉视频直播檒l be plenty of interest in the name Diana if the baby is a girl,香蕉视频直播� Paddy Power said.

When asked on a royal tour in Singapore in 2012 about how many children he wanted, William said he was 香蕉视频直播渢hinking about having two.香蕉视频直播�

More recently, during a royal tour of Poland, Kate joked about a third child when she was given a cuddly toy designed to soothe tiny babies.

Kate thanked the well-wisher for the present and turned to William.

香蕉视频直播淲e will just have to have more babies,香蕉视频直播� she said, laughing.

Kate is the eldest of three siblings, and reportedly had a very happy childhood. William and Harry are the only children of Prince Charles and Princess Diana.

Some visitors to the palace Monday were taken aback by the news. Elizabeth Hopkins, 79, from west London was delighted and said Britain needs lots of royal children.

香蕉视频直播淭hey香蕉视频直播檙e lovely and, you know, going around with a lot of children brings out the best in people as well,香蕉视频直播� she said. 香蕉视频直播淎nd they香蕉视频直播檝e obviously very happy children and in a happy group, so I think it香蕉视频直播檚 all the best for them.香蕉视频直播�

Danica Kirka, The Associated Press