A royal expert sees Prince William and Kate Middleton's move to Windsor as a nod to Princess Dianas' "normal tradition" in raising her kids. As the Cambridges want Prince George, Princess Charlotte and Prince Louis to have a "normal" childhood as possible, they seem to be following in the footsteps of the late People's Princess.

In September, the Cambridge kids will be attending a new school, Lambrook School in Berkshire. With this latest move, Prince William and Kate Middleton are seen to be following Princess Diana's parenting style.

Royal expert Charles Rae said, via Express, Lambrook School is a normal, fee-paying school. "It's not [one that] everyone else has got to go," he stated.

He continued that they follow the tradition the Princess of Wales set for his two sons. In his view, Lady Diana tried very hard to give his kids "as normal a life as possible."

She introduced Prince William and Prince Harry to simple things, like McDonald's, cinemas, and theme parks-the same things normal parents would do. Royal biographer Andrew Morton added Princess Diana also introduced her sons to charity work.

In a Channel 5 documentary, "Diana: Queen of Hearts?," Morton said Princess Diana started to take Prince William and Prince Harry with her on private charity visits at a young age. At the time, she didn't want them to grow up thinking that the whole world was about "4x4 Range Rovers, shotguns, and nannies."

She wanted to give them a normal upbringing despite their royal status, and by the looks of it, Prince William and Kate Middleton are following that philosophy with their own three kids. They're now introducing them to elements of royal life, like by joining Queen Elizabeth on the Buckingham Palace balcony for Trooping the Colour or bringing them to royal tours, per People.

Despite their public appearances, they're still trying their best to maintain their privacy and give them normality by bringing them on ordinary trips to the supermarket or eating from the car's trunk while their dad plays polo.

Royal parents are also known for mostly relying on nannies while carrying out their public duties. In fact, royal biographer Ingrid Seward claimed Prince Charles and Princess Anne could only see Queen Elizabeth at two appointed meetings each day. At the same time, Prince Andrew and Prince Edward were born in a "nanny-dominated world" back in the 1960s.

So, to avoid that from happening to her own kids, Princess Diana ensured to be hands-on with her boys. She even brought a nearly one-year-old Prince William on tour-a first for a royal baby. Sadly, she died when her firstborn was only 15 years old, while Prince Harry was 12 after a tragic car crash in Paris in 1997.