‘Harry Potter and the Deathly Hallows - Part 2’ premiere

“Harry Potter” star Daniel Radcliffe has taken time off from “How to Succeed in Business Without Really Trying” to promote the new Potter film.   (Joel Ryan / Associated Press)

Emma Watson on the red carpet.  (Carl Court / AFP/Getty Images)

Rupert Grint, known in the films as Harry’s best friend Ron Weasley, arrives at the premiere.   (Ian Gavan / Getty Images)

J.K. Rowling, the author of the book series.

Lord Voldemort himself, actor Ralph Fiennes.

Helena Bonham Carter plays Bellatrix Lestrange.   (Joel Ryan / Associated Press)

Tom Felton poses with Jade Gordon.  (Dave Hogan / Getty Images)

Alan Rickman is Harry’s nemesis Professor Snape.   (Joel Ryan / Associated Press)

Twins James and Oliver Phelps play Fred and George Weasley in the movies.  (Ian Gavan / Getty Images)

Evanna Lynch plays loopy Luna Lovegood.  (Dave Hogan / Getty Images)

Harry’s love interest Ginny Weasley is played by Bonnie Wright.  (Ian Gavan / Getty Images)

Gryffindor’s headmistress, professor Minerva McGonagall, is portrayed by Maggie Smith.  (Ian Gavan / Getty Images)

Horace Slughorn actor Jim Broadbent.

Michael Gambon, who portrays Professor Dumbledore, arrives on the red carpet.   (Ian Gavan / Getty Images)

Miriam Margolyes plays Professor Pomona Sprout.  (Ian Gavan / Getty Images)

Mark Williams plays Arthur Weasley in the movies.  (Ian Gavan / Getty Images)

David Bradley is Hogwarts caretaker Argus Filch in the films.  (Ian Gavan / Getty Images)

Warwick Davis, who plays Filius Flitwick, poses with his family.

[For the record: An earlier version of this caption misspelled Davis’ first name as Warrick.]  (Ian Gavan / Getty Images)

Timothy Spall plays Peter Pettigrew .  (Ian Gavan / Getty Images)

Nymphadora Tonks actress Natalia Tena.  (Ian Gavan / Getty Images)

Domhall Gleeson plays Bill Weasley.  (Ian Gavan / Getty Images)

Emma Watson in Trafalgar Square.  (Joel Ryan / Associated Press)

Narcissa Malfoy actress Helen McCrory and husband Damian Lewis.  (Ian Gavan / Getty Images)

Clemence Poesy plays Fleur Delacour.  (Ian Gavan / Getty Images)

Tom Felton, aka Draco Malfoy, signs autographs.  (Ian Gavan / Getty Images)

Matt Lewis, who plays Neville in the film, poses with a guest.  (Ian Gavan / Getty Images)

Lucius Malfoy actor Jason Isaacs.   (Ian Gavan / Getty Images)

Anna Wintour and a guest.   (Ian Gavan / Getty Images)

British model and socialite Pixie Geldof.  (Ian Gavan / Getty Images)

TV personality Peaches Geldof, right, and a guest.  (Ian Gavan / Getty Images)

A Daniel Radcliffe fan puts her sentiments in words.   (Carl Court / AFP / Getty Images)

“Harry Potter” fans in Trafalgar Square in London.   (Joel Ryan / Associated Press)

A fan of character Luna Lovegood.  (Dan Kitwood / Getty Images)

Appreciative fans broadcast their gratitude.  (Carl Court / AFP/Getty Images)

Harry Potter fans queue in Trafalgar Square for the final installment.   (Dan Kitwood / Getty Images)

‘Harry Potter’ fans try to stay dry as they wait for the premiere.   (Dan Kitwood / Getty Images)

Two bespectacled Potter fans.  (Joel Ryan / Associated Press)

Ellie Coote, 15, from Oxford, dressed as Professor Dumbledore clutches a book under an umbrella.  (Joel Ryan / Associated Press)

Fans wave as they wait for the Harry Potter premiere.   (Joel Ryan / Associated Press)

One fan dons a Gryffindor scarf while walking with friends.  (Joel Ryan / Associated Press)

Fans Alina Reinmelt, 14, center left, and Konstanze Stelzer, 15, from Austria wait in Trafalgar Square.  (Dan Kitwood / Getty Images)

The crowd gathers in anticipation of the premiere.  (Joel Ryan / Associated Press)