The stars of The Avengers: Age Of Ultron were out in force on Monday night, at the film’s world premiere, held in Los Angeles at the Dolby Theatre. Stars such as Robert Downey Jr., Chris Hemsworth, Chris Evans and Scarlett Johansson walked the red carpet, greeted by hundreds of screaming fans who lined the streets of Hollywood Boulevard.

Robert Downey JrIron Man Robert Downey Jr. at the Avengers: Age Of Ultron premiere

Speaking to The Hollywood Reporter, Captain America star Chris Evans said, "Without the built-in fan base, these movies wouldn't happen. It’s exciting to be a part of something that you know fans are going to see, that they're excited about. It's intimidating, but the truth is Marvel has yet to let me down.”

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Along with Evans as Captain America the film also sees Robert Downey Jr reprise his role as Iron Man, Chris Hemsworth as Thor, Mark Ruffalo as the Hulk and Scarlett Johansson once again as The Black Widow. Tom Hiddleston will also make an appearance as Loki, while Samuel L. Jackson will be back as Nick Fury.

Scarlet johanssonScarlet Johansson on the red carpet

Newcomers to the franchise include Elizabeth Olsen who plays the Scarlet Witch, Aaron Taylor-Johnson as Quicksilver and James Spader as Ultron. Speaking about the role Olsen told THR on the red carpet that she loved her character's ‘weakness of being overwhelmed and not quite understanding how to control everything that she has.’

See All Our Pictures From The Avengers: Age Of Ultron Premiere

”No one taught her how to use her powers, so her weakness in the comics make her a really interesting characters to me,” the actress added. Also appearing at the premiere was Marvel president Kevin Feige and director Joss Whedon, who described the film as, 'a little odd'.

Elizabeth OlsenAvengers newcomer Elizabeth Olsen

"There's something wrong with it, it's a little unhinged," Whedon said. "I'm very comfortable in the Marvel world and I really love it there. The first one was really a meeting of the minds."

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"It got me enough trust to say you know there are characters and visual ideas and emotional journeys that I want to go on that I couldn't have done in the first movie,” the director added. Avengers: Age of Ultron opens in the UK on April 23rd and May 1st in the US.