Great Britain’s Prince William and his wife Kate Middleton are expecting their third child, according to London’s Kensington Palace.
“Their Royal Highnesses the Duke and Duchess of Cambridge are very pleased to announce that The Duchess of Cambridge is expecting their third child,” Kensington Place said in a statement Monday.
“The Queen and members of both families are delighted with the news,” it added, referencing Queen Elizabeth II, who is William’s grandmother.
Kensington Palace’s statement added that Middleton is suffering from the severe morning sickness that plagued her during her two other pregnancies.
“As with her previous two pregnancies, The Duchess is suffering from Hyperemesis Gravidarum,” it said.
“Her Royal Highness will no longer carry out her planned engagement at the Hornsey Road Children’s Centre in London today. The Duchess is being cared for at Kensington Palace.”
The Daily Mail reported that Middleton is believed to be between eight and 12 weeks pregnant, meaning her next child will be born in April or May.
William and Middleton, who married in 2011, already have a son named Prince George, who is four, and a daughter named Princess Charlotte, who is two.
The couple’s new child would become fifth in line to the United Kingdom’s throne, nudging Prince Harry to sixth place from the role.
Harry, who is William’s brother and the uncle to yet another royal baby, on Monday cheered his family’s good news.
“[It’s] fantastic,” he said during a visit to Manchester. “It’s great. I am very, very happy for them.”
“I haven’t seen them for a while but I think she’s OK,” Harry added when asked about Middleton’s health.
Prince Charles of Wales is William and Harry’s father, and he is second-in-line to the U.K.’s throne after Elizabeth.
The BBC reported that hyperemesis gravidarum is characterized by severe nausea and vomiting, with one of the risks being related dehydration.
Middleton was admitted to the hospital for the condition in December 2012 while pregnant with George.