Scarlett Johansson dazzles at The Avengers UK premiere

20 April 2012 Last updated at 07:40

Hollywood stars Scarlett Johansson, Robert Downey, Jr. and Chris Hemsworth turn out for the UK premiere of The Avengers.
Scarlett Johansson
Hollywood star Scarlett Johansson has revealed that she had to switch to a high vegetable diet to fit into her Black Widow cat-suit. The 27-year-old reprises her role as Russian spy Natasha Romanoff in Joss Whedon's Avengers film.
Scarlett Johansson's tattoo
Showing off her tattoo, she admitted she had to change her eating habits to get into the outfit during a press conference in London with her co-stars. "You're training and doing all that stunt work so you eat a lot of green things," she said.
Robert Downey, Jr.
The Avengers ensemble film sees six Marvel superheroes get together in the same movie, including Robert Downey, Jr. as Iron Man. Gwyneth Paltrow also reprises her role as Tony Stark's long-time assistant, Pepper Potts.
Elsa Pataky and Chris Hemsworth
Australian actor Chris Hemsworth attended the premiere in London with pregnant wife Elsa Pataky. The 28-year-old plays Thor, which also starred Natalie Portman, Anthony Hopkins and Stellan SkarsgÄrd.
Tom Hiddleston
English actor Tom Hiddleston also appears in Thor, as his adoptive brother, nemesis and villain Loki. The action adventure film follows the comic book team as they unite to fight Loki and stop his threat of war from another world.
Mark Ruffalo
Mark Ruffalo joins the superhero world as the Hulk. Talking about director Joss Whedon, he said: "There's a hundred reasons why this movie shouldn't work and the only reason why it does is because of Joss Whedon."
Cobie Smulders
Canadian actress Cobie Smulders wore a red creation by New York designer Alexandra Vidal to the premiere. The 30-year-old plays S.H.I.E.L.D agent Maria Hill, who works under the agency's director Nick Fury (Samuel L. Jackson).
Jeremy Renner
Jeremy Renner, 41, plays S.H.I.E.L.D. agent and master archer Clint Barton/Hawkeye. He made a cameo appearance in last year's Thor movie. He was nominated for a best actor Oscar for his part in 2009's The Hurt Locker.
Cast of The Avengers
The Avengers opens in cinemas on 26 April. It marks director Joss Whedon's biggest film project to date, following cult favourites like Serenity, TV's Buffy the Vampire Slayer and the short-lived Dollhouse.