The Queen and both families are said to be "delighted with the news".
In a statement the palace said the duchess was suffering from severe morning sickness, as she did with her previous pregnancies, so a public engagement she had later on Monday had been cancelled.
This is published unedited from the PTI feed.
- Britain's Royal Family is preparing to welcome a new baby.
British royals Prince William and Catherine, the Duke and Duchess of Cambridge, have announced that they are expecting their third child. Prince George is set to begin his first day of school on Thursday, September 7, at Thomas's Battersea in south London.
It was not immediately clear when the baby is due although betting agencies were beginning to offer odds on possible names for the soon-to-be-born child in the House of Windsor. She is being cared for at their London home.
And Kate also gave an extremely telling clue that she wants more children in the future in Poland.
Kate is the eldest of three siblings, and reportedly had a very happy childhood.
Saying thank you for the present, she turned to the Duke, laughing, and said: 'We will just have to have more babies'. William has a younger brother, Prince Harry.
The couple's third child will become the fifth in line to the throne behind Prince Charles, Prince William, Prince George and Princess Charlotte.
Texas A&M has completely manhandled UCLA at the line of scrimmage, rushing 36 times for 286 yards and five touchdowns as a team. Trayveon Williams had 22 carries for 203 yards and two TDs, and Keith Ford rushed for 114 yards and three TDs on 18 carries.
Dozens of bomb-disposal technicians and hundreds of civilians died from uncontrolled explosions in the decades following the war. A woman carries her belongings past a police officer experts prepare to defuse an unexploded British bomb in Frankfurt .
You can donate to the Humane Society's rescue efforts by texting LOVE to 20222 to donate $10, or donate online here . This will help make room and provide a better chance for pets with owners to reunite with their families.
The problems included distorted graphics and controls that only appear on secondary monitors and not on the main one as well. Windows Mixed Reality is possibly the most interesting feature arriving in the Windows 10 Fall Creators Update .
There was no independent confirmation of the North Korean reports , and Western officials did not comment directly on the claims. Japan's Ministry of Defence said it had dispatched at least three military jets from bases in Japan to test for radiation.
The devastating storm ripped through Houston, Texas , over the weekend, leaving hundreds of thousands displaced and destitute. I implore and encourage everybody else, who can change and make a change for this, to please donate and help out".
Now that iPhone 8 is only a few days away from being officially unveiled, the entire world keeps on sparking rumors about it. Norges Bank bought a new position in shares of Apple during the fourth quarter valued at about $5,625,709,000.
Brock Osweiler is returning to Denver as the Broncos' backup quarterback after he was cut by the Cleveland Browns . The Denver Broncos and Brock Osweiler have agreed to a one-year deal worth $775,000, pending a physical.
Truex is seeking his second straight Southern 500 and his ninth victory in two years with Denver-based Furniture Row Racing . The retro scheme idea, cooked up by NASCAR a few years ago, has become one of the best ideas amid rough times for the sport.
Scorsese has not fully committed to the movie either, so this is more of a "what if", rather than a certain possibility. He was allegedly displeased with the idea of having multiple actors play the character at once.
North Korea fires missile over Japan in longest-ever test
So the question is whether North Korea will put some checks on itself as it seeks to expand its weapons tests in the Pacific. Some experts believe the next North Korean launches will be bolder unless Washington makes serious concessions.
Kenyatta urges for calm after Supreme Court ruling
Judge David Maranga, announcing the verdict, said: "The declaration [of Kenyatta's win] is invalid, null and void ". The court ruled 4-2 in Odinga's favor, saying the electoral commission committed "illegalities and irregularities".
US Open: Petra Kvitova's relaxed approach pays off
No. 13-seed Kvitova upset No. 3-seed Garbine Muguruza on Sunday night, winning 7-6 (3), 6-3 to advance to the U.S. But a lot has happened in her life since then, and she is enjoying every minute of this newfound opportunity.
German opposition leaders fault Merkel-Schulz debate
At several points, Merkel was able to blunt Schulz's critiques by noting that his own party had supported her. Merkel, leading the conservative Christian Democratic Union (CDU) party, is seeking a fourth term in office.
Wild West weather has California baking: The Weather Channel
Temperatures that reached 108 in Sacramento on Friday are expected to shoot past 110 on Saturday as a sweltering week continued. Smoke from nearby wildfires will also linger to start the day but south winds may help to improve conditions later in the day.