A Star Wars movie marathon is taking place in Leicester Square in London, with a thousand fans taking their seats to watch all six films back-to-back.
The special event, part of a day of celebration to mark the release of Revenge of the Sith, ends with a screening of new film Episode III.
Celebrations started at 6am with a parade by the 501st UK Garrison of Stormtroopers around the square.
The UK premiere of the film takes place in London on Monday night.
When the films are on
Episode IV - A New Hope - 7am-9.05am
Episode V - Empire Strikes Back - 9.25am-11.32am
Episode VI - Return of the Jedi - 11.50am-2pm
Episode I - A Phantom Menace - 2.45pm-4.58pm
Episode II - Attack of the Clones - 5.15pm-7.32pm
Episode III - Revenge of the Sith - 9pm-11.20pm
Director George Lucas and stars including Ewan McGregor, Hayden Christensen and Anthony Daniels are expected to attend the star-studded bash.
Hundreds of fan are also expected to turn out - many dressed as characters from the film.
Sunday night saw the World premiere of film at the Cannes film festival.
As well as the movie marathon, cinemas around Leicester Square are also showing individual episodes of the space saga.
Other events include live performances of the Star Wars score by the Royal Philharmonic Orchestra, plus on Monday afternoon Christopher Lee and Anthony Daniels took part in public interviews on a special stage in the square.