kate middleton and william
Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge during a visit to Evelina London Children's Hospital on Dec. 11, 2018 in London. Chris Jackson/Getty Images

The latest rumor to hit Britain’s royal family is that Kate Middleton, who is officially known as Catherine, Duchess of Cambridge, is expecting her fourth child.

Though this pregnancy news has not been confirmed by the palace, Star Magazine reports the 36-year-old Duchess and her husband, Prince William, are expecting a girl and are awaiting on announcing the news as to not “steal the thunder” from pregnant Duchess Meghan Markle.

In this tabloid’s Dec. 24 print issue, it is reported that Kate wants her in-laws, Prince Harry and Meghan, to enjoy their time in the spotlight as they prepare to welcome their first child this spring. “She knows how excited Harry and Meghan are, and she wants them to enjoy this time,” a source told the magazine.

READ: Meghan Markle Caught Calling Baby Bump ‘Them’

While Kate and William are said to be tight-lipped about their speculated baby news, the magazine reports the pair is thrilled about adding a new addition to join children Prince George, 5; Princess Charlotte, 3; and Prince Louis, 7 months.

“Kate and Williams are deliriously happy to be expecting again and better still that it’s a girl,” said an “elated informant.” “Now they’ll have two of each to complete their family.”