Kate and William welcomed their first child to the world in 2013. The pair have gone onto have two other children, Princess Charlotte and Prince Louis.
However, after the birth of their first child, William asked Kate one revealing question.
In an interview with Giovanna Fletcher, on her podcast 'Happy Mum, Happy Baby', Kate admitted it took her and William some time to adjust to parenting.
Kate said: "It wasn’t that quiet in our household.
"William was like ‘Oh my gosh is this what parenting is going to be like?’
Kate Middleton: Duchess of Cambridge reveals William's concerning question (Image: GETTY)
Kate Middleton: Kate spoke to Giovanna Fletcher (Image: GETTY)
"It took us a bit of time to get ourselves settled and going again but that’s the Beauty, I suppose of having a new-born baby.
"You are pulled to your toughest and most unknown places that you hadn’t necessarily even thought about before."
Also within the interview, Kate praised her parents for her upbringing.
She said: "I had a very happy childhood. It was great fun – I’m very lucky, I’ve come from a very strong family – my parents were hugely dedicated to us – my siblings.
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Kate Middleton: Kate used hypnobirthing techniques (Image: GETTY)
"I really appreciate now as a parent how much they sacrificed for us.
"They would come to every sports match – I was very keen on sport – they came to every sports match, they’d be the ones on the side-line shouting, and we’d always have our family holidays together.