Well, not really a letter. A "note" from the palace signed by her assistant. I got two, in fact.

I think Princess Mary is awesome so I wrote her a letter, like a couple of years ago. I got the note back from the palace and I was mad that it didn't include her actual signature, so I threw it away.

Then I said to myself, "Well shit, now I don't have the letter anymore" so I wrote another one. And then I got another letter back, also not signed by Princess Mary but by her assistant.

Anyway, thought you Danes might be interested in that story.