The premiere of the latest in the Star Wars franchise, The Force Awakens, takes place in Los Angeles later.
The film, the seventh in the series, has reunited original stars including Harrison Ford, Mark Hamill and Carrie Fisher.
British actors John Boyega, Daisy Ridley and Gwendoline Christie are all expected on the red carpet on Hollywood Boulevard.
Fans have gathered outside three cinemas since last week.
The film is due to be shown at the three venues – the TCL Chinese Theatre, the Dolby Theatre – home of the Oscars – and the El Capitan Theatre.
The TCL Chinese Theatre – formerly known as Grauman’s Chinese Theatre – hosted the premiere for the first Star Wars movie in 1977.
Fans camping have been told they must spend at least 24 hours in the queue to be eligible to buy a pair of tickets, with an additional 24 hours giving the option to buy another ticket.
Invitations sent to members of the press have asked journalists not to reveal spoilers in their reviews.