The Princess of Wales is very passionate about the subject.

Princess Catherine

Princess Catherine is very passionate about her work (Image: Mark Cuthbert/UK Press via Getty Images)

Princess Catherine has been dubbed a “pro” by her husband, Prince William, as he revealed that she does royal paperwork before going to bed. Just weeks ago, the Princess of Wales carried out a solo trip abroad to Italy with her Royal Foundation Centre for Early Childhood.

The aim of the trip, which saw the Princess visit Reggio Emilia, was to start the global conversation about the importance of childhood. This specifically involves the first five years of a child’s life and how these years can shape their futures. This is a subject that Catherine is extremely passionate about and has previously been referred to as her "life's work".

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When appearing on Heart Radio last week, Prince William praised his wife and her work regarding children and the early years.

Prince William said his wife is very passionate about the topic, calling her a “proper pro” in the field.

He revealed: "She spends, God knows how much time now, looking through all the paperwork.

"She's a proper pro on early years. Most evenings I'm fighting to get past in the bedroom, what paperwork that she's got lined up, ready to read."

Princess Catherine

Catherine is passionate about children having healthy childhoods (Image: Jordan Pettitt via Samir Hussein/WireImage)

It is believed Catherine spends evenings reading about the projects, research and work surrounding childhood and early years.

This is likely something she does once she has spent time with her own children and put them to bed, with Catherine known to be a very hands-on mum with Prince George, Princess Charlotte, and Prince Louis.

He said in his radio appearance: "She’s an amazing mum and an amazing wife and literally our family couldn’t cope without her, so she’s been absolutely stunning, really has."