Thousands of Harry Potter fans have descend on London for the world premiere of 'Harry Potter And The Deathly Hallows: Part II'.

Supporters from as far afield as Argentina and China have camped out in the pouring rain in London's Trafalgar Square in the hope of catching a glimpse of the movie's stars Daniel Radcliffe, Emma Watson and Rupert Grint at the event in Leicester Square tonight (07.07.11).

The road in between the two squares has been transformed into a version of Diagon Alley - a fictional street in the film featuring shops selling various wizardry accessories - where a 1.2km red carpet, thought to be the longest in the world, has been set up between the two locations.

The movie - which also stars Ralph Fiennes, Alan Rickman, Helena Bonham Carter, Michael Gambon and Maggie Smith - is the eighth and final instalment of the series, which follows Harry on his quest to defeat the evil Lord Voldemort.