Contrary to what people think, the life of the Duchess of Cambridge is not always glamorous. There is a strict protocol that Kate Middleton must follow. And living in the public eye the way she does, there are no exceptions. Since marrying Prince William, she has had to adapt to the lifestyle and the rules laid out for living at the court of Queen Elizabeth II — and trust us, there are lots of rules to follow!
The Duchess of Cambridge became a celebrity after she joined the Royal Family. However, she cannot sign autographs for fans. Under the rules of the crown, she can only sign official documents previously authorized by Queen Elizabeth II.
The reason for this rule comes from the fear that someone could falsify documents on behalf of a member of the Royal Family. Because of this, only photos and handshakes are allowed.