Celebrating 20 years of Harry Potter
LONDON, ENGLAND - JULY 07: (L-R) Rupert Grint, Emma Watson and Daniel Radcliffe attend the World Premiere of Harry Potter and The Deathly Hallows - Part 2 at Trafalgar Square on July 7, 2011 in London, England. (Photo by Ian Gavan/Getty Images)Ian Gavan
Promotional image of the Hogwarts Express at Universal Studios' Wizarding World of Harry PotterUniversal Studios' Promotional Image
Writers J.K. Rowling, left, and Jack Thorne pose for photographers upon arrival at gala performance of Harry Potter and the Cursed Child, at the Palace Theatre in central London, Saturday, July 30, 2016. Based on an original new story by J.K. Rowling, John Tiffany and Jack Thorne, it is the eighth story in the Harry Potter series and is the first of the stories to be presented on stage. (Yui Mok/PA via AP)Yui Mok
LONDON - NOVEMBER 3: Actor Daniel Radcliffe, 12-years-old, arrives for the "Harry Potter and the Chamber of Secrets" world premiere November 3, 2002 in London, England. Radcliffe plays the part of child wizard Harry Potter. The movie is director Christopher Columbus's second installment of the series based on J.K. Rowling's tales of wizardry. (Photo by Scott Barbour/Getty Images)Scott Barbour
Emma Watson at the Los Angeles premiere of " Harry Potter and the Chamber of Secrets" at the Village Theatre, Thursday, Nov. 14, 2002. Photo by Kevin Winter/ImageDirect.Kevin Winter
ORLANDO, FL - NOVEMBER 27: In this handout photo provided by Universal Orlando, Academy award-winning actors Michael Douglas and wife Catherine Zeta-Jones along with their children Dylan, 10, and Carys, 7, fly over The Wizarding World of Harry Potter and past Hogwarts Castle while riding Flight of the Hippogriff at Universal Orlando Resort on November 27, 2010 in Orlando, Florida. (Photo by Matt Stroshane/Universal Studios via Getty Images)Handout
WESTWOOD, CA - NOVEMBER 14: Actress Emma Watson attends the premiere of the film "Harry Potter and the Chamber of Secrets" on November 14, 2002 in Westwood, California. The film is the second movie based on the popular novels of author J.K. Rowling. (Photo by Vince Bucci/Getty Images)Vince Bucci
SYDNEY, AUSTRALIA - JULY 21: Harry Potter fans take a steam train from Sydney Central Station to a secret location for the much anticipated unveiling of the final novel by author J.K. Rowling, "Harry Potter and the Deathly Hallows" on July 21, 2007 in Sydney, Australia. (Photo by Lisa Maree Williams/Getty Images)Lisa Maree Williams
SAN FRANCISCO - DECEMBER 21: Copies of Harry Potter books stand on display at the Clean Well-Lighted Place For Books December 21, 2004 in San Francisco, California. Harry Potter author J.K. Rowling announced Tuesday that she has completed the sixth Potter novel, "Harry Potter and the Half-Blood Prince" and it will be published on July 16, 2005. (Photo by Justin Sullivan/Getty Images)Justin Sullivan
ORLANDO, FL - JUNE 05: In this handout photo provided by Universal Orlando Resort, James Phelps, Bonnie Wright and Oliver Phelps from the popular Harry Potter film series enjoyed a sneak peek of the highly anticipated, spectacularly themed environment, The Wizarding World of Harry Potter - Diagon Alley at Universal Studios Florida on June 5, 2014 in Orlando Florida. (Photo by Kevin Kolczynski/Universal Orlando Resort via Getty Images)Handout
MIDDLEBURY, VT - OCTOBER 26: Middlebury College hosted the first large Intercollegiate Quidditch Tournament. (Photo by Christopher Capozziello/Getty Images)Christopher Capozziello
BURBANK, CA - DECEMBER 07: A view from J.K. ROWLING'S WIZARDING WORLD: The Harry Potter and Fantastic Beasts Exhibit at Warner Bros. Studio Tour Hollywood at Warner Bros. Studios on December 7, 2016 in Burbank, California. (Photo by John Sciulli/Getty Images for Warner Bros. Studio Tour Hollywood)John Sciulli
396861 12: Actor Rupert Grint arrives for the world premiere of "Harry Potter and the Philosopher's Stone" November 4, 2001 in London. (Photo by Anthony Harvey/Getty Images)Anthony Harvey
BERLIN - JULY 21: Fans hold the last book by J.K. Rowling "Harry Potter and the Deathly Hallows" in their hands at a bookstore after its release at 1:01am on July 21, 2007 in Berlin, Germany. (Photo by Andreas Rentz/Getty Images)Andreas Rentz
SYDNEY, AUSTRALIA - JULY 21: Harry Potter fans rush to read the opening lines of the new and final novel by author J.K. Rowling, "Harry Potter and the Deathly Hallows" during a fans day at The Carriage Works on July 21, 2007 in Sydney, Australia. (Photo by Lisa Maree Williams/Getty Images)Lisa Maree Williams
LONDON, ENGLAND - JULY 07: JK Rowling, Emma Watson, Jason Isaacs and Daniel Radcliffe look on as Rupert Grint speak to the fans on stage during the World Premiere of Harry Potter and The Deathly Hallows - Part 2 at Trafalgar Square on July 7, 2011 in London, England. (Photo by Ian Gavan/Getty Images)Ian Gavan
BERLIN, GERMANY - NOVEMBER 8: Children dressed as Harry Potter characters hold their just-purchased copy of the German-language edition of "Harry Potter and the Order of the Phoenix" November 8, 2003 in Berlin, Germany. The fifth in the Harry Potter series by author J.K. Rowling went on sale at midnight at bookshops thoughout Germany. (Photo by Sean Gallup/Getty Images)Sean Gallup
LONDON - MAY 27: Actors Daniel Radcliffe, Emma Watson and Rupert Grint pose at photocall ahead of Sunday's UK premiere of "Harry Potter And The Prisoner Of Azkaban" at Number 1 Whitehall Place on May 27, 2004 in London. The film is the third based on cult books by author J.K. Rowling. (Photo by Steve Finn/Getty Images)Steve Finn
NEW YORK - JULY 09: Actors Daniel Radcliffe, Emma Watson, and Rupert Grint attend the "Harry Potter and the Half Blood Prince" premiere after party at American Museum of Natural History on July 9, 2009 in New York City. (Photo by Stephen Lovekin/Getty Images)Stephen Lovekin
396861 10: Tom Felton, who plays Draco, arrives for the world premiere of "Harry Potter and the Philosopher's Stone" November 4, 2001 in London. (Photo by Anthony Harvey/Getty Images)Anthony Harvey
JULY 21: Harry Potter fans rush to read the opening lines of the new and final novel by author J.K. Rowling, "Harry Potter and the Deathly Hallows" during a fans day at The Carriage Works on July 21, 2007 in Sydney, Australia. (Photo by Lisa Maree Williams/Getty Images)Lisa Maree Williams
WASHINGTON - APRIL 05: British author J.K. Rowling, creator of the Harry Potter fantasy series, points to the place on her forehead where her title character has a scar while reading "Harry Potter and the Sorcerer's Stone" during the Easter Egg Roll on the South Lawn of the White House April 5, 2010 in Washington, DC. About 30,000 people are expected to attend attended the 132-year-old tradition of rolling colored eggs down the South Lawn of the White House. (Photo by Chip Somodevilla/Getty Images)Chip Somodevilla