Kate Middleton might be one of the most talked about women in the world - both in the media and casual conversation - but you'd be hard pressed to find her autograph anywhere.
While the concept of autographs might seem slightly outdated thanks to selfies (which, by the way, the British royals don't like either), there is a strict rule against it at public appearances.
"The long-standing rule remains in place for all royals because of the risk of the signature being forged," according to the Daily Express.
And it isn't just a rumour as when Prince Charles is asked, he responds: "Sorry, they don’t allow me to do that."
He did break protocol back in 2010 for the son of a flood victim, only writing 'Charles 2010' and later apologising for the shaky signature because he wasn't used to writing while standing up.
While they seem to have no problem stopping and speaking with well-wishers, Harry draws the line at selfies.
"No, I hate selfies. Seriously, you need to get out of it. I know you’re young, but selfies are bad," he told a fan in Australia in 2015.
Kate and Will have no qualms about it though, just search Google for a plethora of awkward faces from the 'cool' royals in the family.