Britain’s Prince William and his wife, Catherine, are expecting their third child together, Kensington Palace announced on Monday.
“Their royal Highnesses The Duke and Duchess of Cambridge are very pleased to announce that The Duchess of Cambridge is expecting their third child,” said the palace statement.
“The Queen and members of both families are delighted with the news,” it added.
Earlier in her two pregnancies Kate suffered from hyperemesis gravidarum, which involves nausea and more severe vomiting in the morning.
The illness has forced Kate, 35, to cancel a planned engagement at the Hornsey Road Children’s Centre in London, which had been due to take place on Monday morning.
She is being cared for at Kensington Palace, the statement said.
The couple made early announcement due to her sickness.
The newest tiny royal will be a sibling to four-year-old Prince George and two-year-old Princess Charlotte — the royal couple’s first two children.
Regardless of whether the child is a boy or a girl, the baby will become the fifth in line to the throne behind big sister Charlotte, bumping Prince Harry down the line of succession.
A change in law after William and Kate wed gave women the same rights of accession to the throne as men.
The child will be Queen Elizabeth’s sixth great-grandchild.