Actors Emma Watson, Rupert Grint and Daniel Radcliffe attend a photocall to present the new cast of the Harry Potter Films, London, August 23, 2000. (Photo by Dave Hogan/Getty Images)

Actress Emma Watson arrives at the British Academy Children's Film And Television Awards in association with The Lego Company, at the Hilton Hotel on November 30, 2003 in London, England. (Photo by Steve Finn/Getty Images)

Actress Emma Watson attends the party for the World Premiere of “Harry Potter And The Goblet Of Fire” at The Natural History Museum on November 6, 2005 in London, England. (Photo by Dave Hogan/Getty Images)

Actress Emma Watson arrives at the UK film premiere of “Driving Lessons” at Curzon Mayfair on September 4, 2006 in London, England. (Photo by Dave Hogan/Getty Images)

(L-R) Rupert Grint, Emma Watson and Daniel Radcliffe pose at the photocall for “Harry Potter And The Order Of The Phoenix” on June 25, 2007 in London, England. (Photo by Dave Hogan/Getty Images)

Actresses Katie Leung (L) and Emma Watson arrive at the european premiere of “Harry Potter And The Order Of The Phoenix” at Odeon Leicester Square on July 3, 2007 in London, England. (Photo by Dave Hogan/Getty Images)

Emma Watson poses at the winners boards at the Sony Ericsson Empire Film Awards at the Grosvenor House Hotel on March 9, 2008 in London England. (Photo by Dan Kitwood/Getty Images)

Emma Watson arrives at the Christian Dior PFW Spring/Summer 2008 show on September 29, 2008 in Paris, France. (Photo by Francois Durand/Getty Images)

Actress Emma Watson poses at the afterparty for the premiere of Universal Picture's “The Tale of Despereaux” at the Hollywood Palladium on December 7, 2008 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)

Emma Watson attends the world premiere of “Harry Potter and the Half Blood Prince” held at the Odeon Leicester Square on July 7, 2009 in London, England. (Photo by Dave Hogan/Getty Images)

Actress Emma Watson attends the “Harry Potter and the Half-Blood Prince” premiere at Ziegfeld Theatre on July 9, 2009 in New York City. (Photo by Stephen Lovekin/Getty Images)

(L-R) Liv Tyler, Emma Watson, Gwyneth Paltrow and Mario Testino watch the Burberry Prorsum Spring/Summer 2010 Show at Rootstein Hopkins Parade Ground during London Fashion Week on September 22, 2009 in London, England. (Photo by Chris Jackson/Getty Images for Burberry)

Actress Emma Watson attends the Costume Institute Gala Benefit to celebrate the opening of the “American Woman: Fashioning a National Identity” exhibition at The Metropolitan Museum of Art on May 3, 2010 in New York City. (Photo by Larry Busacca/Getty Images)

Actress Emma Watson (L) and Actor Daniel Radcliffe poses in the winners room at the National Movie Awards 2010 at the Royal Festival Hall on May 26, 2010 in London, England. (Photo by Gareth Cattermole/Getty Images)

Emma Watson attends the Harry Potter And The Deathly Hallows: Part 1 World film premiere at Odeon Leicester Square on November 11, 2010 in London, England. (Photo by Gareth Cattermole/Getty Images)

Emma Watson attends a photocall for Harry Potter and the Deathly Hallows at The Renaissance St Pancras Hotel on July 6, 2011 in London, England. (Photo by Dave Hogan/Getty Images)

Actress Emma Watson attends the New York premiere of “Harry Potter And The Deathly Hallows: Part 2” at Avery Fisher Hall, Lincoln Center on July 11, 2011 in New York City. (Photo by Stephen Lovekin/Getty Images)