If you ever meet Will and Kate, stick to selfies.
Catherine, Duchess of Cambridge greets fans at MacRostyy Park in Crieff, Scotland Kate Middleton British Royal Family UK autograph ban
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If you ever have the chance to get up close and personal with a member of the British royal family, make sure to shake their hands or snap a quick photo to commemorate the occasion. Just don’t ask any of them for an autograph.

As the U.K.'s Express reported, the entire family, including the Queen, Prince Charles, William, Harry, and the Duchess of Cambridge, are all barred from ever scribbling their names on a piece of paper, a photo, or even the rogue body part when asked by fans.

When approached by well-wishers for his signature, Charles reportedly replies, "Sorry, they don't allow me to do that."

Charles did break this protocol in 2010 when he jotted down his name on a piece of paper for the victims of the Cornwall flood, however. According to the Daily Mail, two flood victims, Tony and Meg Hendy, asked the Prince, “Can I be really cheeky please sir and can I have your autograph for my young son Tom? I'm not sure if you do autographs but it would make his day?” Charles asked his security team for a pen and simply wrote “Charles 2010.”

The rule is allegedly in place to protect the royals and help stop people from ever learning to forge their signatures.

However, the signatures are out there in the world as the family is indeed allowed to sign visitors books at official engagements as well as sign official documents.

And if you really, really want a royal autograph, you can get one, just not from any current member of the royal family. As Reader’s Digest noted, a document signed by Queen Elizabeth I in 1599 is available for purchase for $27,500.

The royal rules really seem to be stacking up against the Windsor family. As Travel + Leisure previously reported, the entire royal brood is banned from eating certain foods, its youngest members are barred from using some popular forms of technology, and apparently none of them are allowed to play Monopoly, but only because things get “too vicious,” according to William.