A new report from the Express states that the boy’s father cheekily asked Kate: "baby number four?"
To which the duchess responded:
"I think William would be a little worried!"
Kate’s admission is sure to disappoint royal fans who are desperate for another royal baby announcement. However, it seems that for now, Prince George, six, Princess Charlotte, four and Prince Louis, 16 months are keeping Kate busy.
Back in June, royal fans speculated that the duchess may be pregnant after sporting what appeared to be a small baby bump during an appearance at Royal Ascot.
The mum-of-three was even spotted gently touching her stomach throughout the day.
And it seems Prince William and Kate Middleton aren’t the only royal couple who are sparking baby speculation.
The Express also reports that the Duke and Duchess of Sussex will welcome a baby at the end of April or early May 2020.
"Harry and Meghan clearly aren’t messing around and if the latest odds are anything to go by, the pair could be adding to their family next year," said Alex Apati from Ladbrokes.
In June, Coral bookmakers slashed the odds on Prince Harry and Meghan welcoming a sibling for Baby Sussex.
"We have been inundated over the last few days with bets on Harry and Meghan having a second baby in 2020,” spokesperson John Hill told The Mirror.