The royal family is as prim and proper as can be but they’re not immune to public fights! Sources exclusively reveal to Life & Style that Kate Middleton and Prince William couldn’t help but have it out on July 17 after an event in Warsaw, Poland where Kate made a joke about having baby No. 3!

During her trip, the 35-year-old was gifted with a stuffed animal that was designed for newborns. Since her children — four-year-old Prince George and two-year-old Princess Charlotte — are already too old for the toy, she reportedly told her hubby, “We will just have to have more babies.”

kate middleton royal family germany 2017

(Photo Credit: Getty Images)

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But William did not think her joke was funny and later that day, they were spotted having a very tense argument because they disagree on expanding their family. “Tension has been simmering for some time,” says a royal insider, “and it came to the surface under the pressure of a royal tour.”

Kate has her heart set on having at least one more baby, because, “Coming from a family of three herself, she thinks it’s the perfect number,” says the insider, but William is not on the same page. “He’s quite happy with a boy and a girl.”

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At the moment, George and Charlotte are “are both at ages where they can’t sit still so they run around all over the place,” says a source. And even though the couple can afford nannies to help care for their children, they “are determined to be hands-on parents” which can be an overwhelming experience.

Kate opened up about her own struggles with adjusting to motherhood back in March during a speech she gave in order to raise awareness of mental health issues in mothers. “Personally, becoming a mother has been such a rewarding and wonderful experience,” she said at the time, according to the Huffington Post. “However, at times it has also been a huge challenge, even for me who has support at home that most mothers do not.”

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