JK Rowling's Latest 'Fairy Tale' Book Is Trapped in the Closet

CNN asked the iconic author about the "political book for children," and Rowling revealed a fun fact: She actually wrote the manuscript on her 50th birthday party dress, and it's currently trapped in her closet.

"Oh, that was a fairy tale," she said of the manuscript." But I -- I will tell you this. 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. And 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."

This isn't the first time Rowling wrote her iconic manuscripts by hand. For example, she wrote the first draft of “Harry Potter” on a variety of materials when a notepad wasn't handy.

“I have been known to write on all sorts of weird things when I didn't have a notepad with me,” she previously told Amazon. “The names of the Hogwarts Houses were created on the back of an airplane sick bag. Yes, it was empty.”

Later in Rowling's interview with CNN, the writer said that her pen name “J.K.” was invented to disguise her gender so the book could appeal to all sexes, but once she was “outed as a woman” she took it as an opportunity to become a role model for young girls.

“I actually quite like having a pen name because I feel that's to an extent, that feels like an identity and then I'm in private life, I'm Jo Murray. And it feels like quite a nice separation.”