Princess Kate Middleton may be married to Prince William, but sometimes he's just like one of the kids, according to a new book about the royals. An excerpt from Tom Quinn's upcoming book, Yes Ma'am: The Secret Life of Royal Servants,

"Before Kate realised that as a senior royal you have to dress carefully, having taken advice, she once bought an outfit that William considered inappropriate," the advisor said. "He told Kate she looked as if she’d just run through a charity shop covered in superglue. Everyone thought this was very funny, including, to her credit, Kate."

A royal author has revealed a crucial way Princess Kate steps in to help Prince William through 'irritated' moments, claiming that the future King and his father are 'prone to tantrums'