"Gilded Youth" book by Royal Author Tom Quinn discusses Prince William and Kate Middleton's private life.

The book looks at how royals were raised in the past and how that has changed.

The pair fights and calls each other "babe" and "Babykins" as nicknames.

William is crazy about Middleton's hair and sometimes irritably calls her "darling."

According to reports, Middleton exudes "Zen tranquility."

The couple wishes to be perceived as a typical marriage.

They keep history alive while breaking the rules of how royals are usually raised.

The couple wants their kids to grow up in a more normal way.

Princess Diana referred to William as "Wombat."