JK Rowling wrote a new book on her dress

Unorthodox release strategies are all the rage lately, but J.K Rowling has a truly unique one waiting in the wings, revealing this week that she wrote a fairy tale onto a dress that is now hanging in her closet.

Asked by CNN about a political book for children she was rumoured to be writing, Rowling clarified: "Oh, that was a fairy tale.

"But I will tell you this," she continued. "On my 50th - the theme of my 50th birthday, which I held at Halloween, even though that's not really my birthday - was 'come as your own private nightmare'.

"And I went as a lost manuscript. I wrote over a dress most of that book. So that book, I don't know whether it will ever be published, but it's actually hanging in a wardrobe currently."

The fairy tale is presumably not a long one if it can fit on a dress but it would no doubt be very sought after, as literally any words Rowling commits to paper are.

The author has continued this year to broaden the Harry Potter universe through writings on Pottermore, a recent one detailing the Harry Potter that came before the Harry Potter we know.