royal couple
Catherine, Duchess of Cambridge holding Princess Charlotte, Prince George and Prince William, watch a flypast as they stand on the balcony of Buckingham Palace after the annual Trooping the Colour ceremony on Horseguards Parade in central London, Britain June 11, 2016. Trooping the Colour is a ceremony to honour Queen Elizabeth's official birthday. The Queen celebrates her 90th birthday this year. Reuters/Toby Melville

Prince William and Kate Middleton, who are parents to Prince George, 3, and Princess Charlotte, 1, are said to be planning on expanding their family again. A family friend of the British royals has revealed that the couple “want a third baby soon.”

“It would not surprise me if they were pregnant by Christmas,” the unnamed source said to US Weekly.

The 34-year-old Duke and Duchess of Cambridge are said to be willing to adjust their schedules to accommodate the baby. According to the insider, the couple will curtail their royal tours in 2017 should Kate become pregnant.

“I think they both would have been overwhelmed at the thought of a third child a year ago but now it sounds perfect,” the unnamed source added. “They’ve both always wanted a big family.”

The couple are doing their best to keep their home life away from the spotlight. At their 10-bedroom Norfolk mansion, “their kids are living as normal lives as possible,” the source said. Prince George is said to be a Matchbox aficionado, and like many youngsters, the young prince is obsessed with anything powered by an engine. Meanwhile, Princess Charlotte is said to follow her mum wherever she goes. “If Kate is in the study, Charlotte wants to be in the study,” the source shared.

The Duchess suffered from hyperemesis gravidarum (acute morning sickness) during the first two pregnancies and would need to rest up for a third pregnancy.

Until the Duchess is pregnant, it’s business as usual for the royal couple. The pair are due in Canada from Sept. 24 through Oct. 1 for an official visit.

“The Duke and Duchess are delighted to be returning to Canada,” a Kensington Palace spokesperson said. “They hold very happy memories from their visit in 2011 – their first overseas tour as a married couple. They are really looking forward to seeing other parts of this beautiful country and having the opportunity to meet many more Canadians along the way.”

The couple are also reportedly planning a week-long vacation with their children in Balmoral, Scotland, though this report has yet to be confirmed.