LONDON, ENGLAND - JULY 30: J. K. Rowling attends the press preview of 'Harry Potter & The Cursed Child' at Palace Theatre on July 30, 2016 in London, England. Harry Potter and the Cursed Child, a two-part West End stage play written by Jack Thorne based on an original new story by Thorne, J.K. Rowling and John Tiffany. (Photo by Rob Stothard/Getty Images)