LONDON, ENGLAND - APRIL 29:  Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge drive from Buckingham Palace in a decorated sports car on April 29, 2011 in London, England. The marriage of the second in line to the British throne was led by the Archbishop of Canterbury and was attended by 1900 guests, including foreign Royal family members and heads of state. Thousands of well-wishers from around the world have also flocked to London to witness the spectacle and pageantry of the Royal Wedding.   (Photo by Jeff J Mitchell/Getty Images)
William and Kate 5 years on
01:28 - Source: CNN
CNN  — 

Britain’s Prince William and his wife Catherine have revealed that their third child is due in April next year.

“The Duke and Duchess of Cambridge are delighted to confirm they are expecting a baby in April 2018,” Kensington Palace’s official Twitter feed posted on Tuesday.

Kate’s pregnancy was announced by the palace last month.

At the time, she was said to be suffering from hyperemesis gravidarum, severe levels of nausea and vomiting, a more serious health risk than the morning sickness many women suffer during early pregnancy.

The duchess was affected by the same condition during her two previous pregnancies.

The royal couple with their two children on a three-day tour in Germany on July 21.

The newest addition to the royal family will be William and Kate’s third child, a brother or sister for Prince George, 4, and Princess Charlotte, 2.

The baby will become fifth in line to the throne, behind big sister Charlotte, bumping William’s brother Prince Harry farther down the line of succession.

A change in the law after William and Kate were married in 2011 gave women the same rights of accession to the throne as men.

The child will be Queen Elizabeth’s sixth great-grandchild.

Related: Brands hope for sales boost form new royal baby

The Cambridges moved back to London this year so that they can take on more royal duties on behalf of the Queen and her husband Prince Philip. The 96-year-old prince retired from public duties in August.

William and Kate toured Canada last year with their two children, George and Charlotte.

Prince William, 35, had been working as an air ambulance helicopter pilot for the past two years. It was the first time a royal who is in direct line to the throne had taken a civilian job; he donated his salary to charity.

Since 2014, William and Kate have used Apartment 1A at Kensington Palace in London – which underwent a $7.6 million overhaul in 2014 – as their official residence.