She's already mum to the adorable Prince George, Princess Charlotte, and Prince Louis, but it looks as though the Duchess of Cambridge is definitely open to the idea of baby number four.
During hers and Prince William's two-day visit to Northern Ireland, Catherine opened up about the possibility of another child, during a walkabout in Ballymena.
Whilst meeting hundreds of well-wishers, Kate came across adorable, five-month old baby James Barr, and his dad Alan.
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Stopping to coo at the little boy, she confessed that seeing him had made her think about another child of her own. She said, "Hi James! How old are you? Hello!"
Before admitting, "He's a very sweet little boy... He's so diddy. Makes me feel broody,"
However, it seems Catherine's husband Prince William might not quite be on the same page as his wife when it comes to another child. Alan Barr was quick to ask about baby number four for the royal couple, to which the Duchess laughed and responded, "I think William might be slightly worried."
Of course, Prince William and Catherine's youngest child Prince Louis is still just 11 months old - he'll be celebrating his first birthday on 23rd April.
As the Duke and Duchess of Cambridge made their way through the crowds, Catherine also met with nine-year-old Hannah Ritchie, who was desperate to discover what being a real-like Princess is like.
She told Hello! magazine (opens in new tab), "I asked if she liked being a princess, and is the palace big? She said she liked being a princess because she can travel around the world and meet all the lovely children.
"She gets to talk to them - she loves meeting and talking to the children."
Catherine reportedly told Hannah, "I love working with young people. Everyone is so brave and strong in some of the places we go. It's very nice to meet you."
Later on in the day, the Duke and Duchess met with members of the police force at Hillsborough Castle, before rounding off their visit with a trip to a childcare centre.
