(LOS ANGELES) -- The cast of the star-studded superhero flick The Avengers gathered Wednesday evening in Los Angeles for the movie's world premiere.
After making a flashy entrance in a car that would make his onscreen Iron Man alter-ego Tony Stark proud, a purple-suited Robert Downey Jr. greeted enthusiastic fans who turned out in droves to cheer him and fellow Avengers Chris Hemsworth, Samuel L. Jackson, Chris Evans, Scarlett Johansson, Jeremy Renner and Mark Ruffalo.
Johansson said her character Black Widow's skin-tight outfit may have been great to look at, but it presented unique challenges of its own.
"The first time I tried it on, and took a high kick, the entire seam split," she laughed. "I was like, 'We need to reinforce these seams.' There's a lot of bending and sliding and barrel rolling and all that stuff, so the suit's gotta be tough."
Also on hand was writer/director Joss Whedon, Iron Man and Iron Man 2 director Jon Favreau, and celebrity fanboys and fangirls like The Talk host and Archer co-star Aisha Tyler.
"This is huge," Tyler told ABC News Radio. "The nerd in me just peed herself...The 'blerd' in me, the black nerd, is going bananas."
Disney star Roshon Fegan, who's currently on Dancing with the Stars, also attended the event with DWTS pro dancer Chelsie Hightower.
The Avengers opens nationwide on May 4.
Copyright 2012 ABC News Radio