Kate Middelton and her husband, Prince William, are one of the most beloved celebrity couples, especially among their people. People love them because of their simplicity, kindness and accessibility, but they have never autographed anyone ever. Recently someone has asked this question, so the foreign media have been talking about a reason that seems quite logical to us.
The hugs and selfie with excited fans are part of the Duchess of Cambridge everyday, but what you will never see is how beautiful William's wife signs autographs in a thronging crowd. Or, anywhere else. Namely, one of the myriad rules of the British royal family, which applies to Prince Harry, Prince William, Queen Elizabeth II, Prince Charles, and indeed all family members, is a strict ban on autographs.
The reason is very clear and logical - there is a reasonable doubt about the attempt to forge signatures of Royal Family members and they simply do not want to expose this risk.