According to her, on this day she celebrated Halloween and her birthday at the same time.
As reported by CNN, citing the words of the writer, her costume was a dress in the form of a lost manuscript. At the same time she decided to write on the dress most of the new fairy tale.
However, she has not yet decided whether she will publish it or not. So far, as the writer says, the dress is hanging in the closet.
Recall, as reported URA-Inform, Joanne Rowling in August 2016 said that she intends to put an end to the potter. The world-famous writer warned that the new book about the wizard will be the last. Harry is waiting for a great trip, and it seems to me that we will end on this, - Rowling confessed in an interview with Entartainment weekly.