LOS ANGELES – With a cast of A-list superheroes and villains, "The Avengers" beat out its competitors to become the big winner at the MTV Movie Awards, but it was host Rebel Wilson's wardrobe malfunction and actress Aubrey Plaza's awkward stage rush that had everyone talking on Sunday night.
"The Avengers" won three awards, including the top prize, movie of the year.
"What's the opposite of humbled? We're Biebered to be standing here," said "Avengers" writer-director Joss Whedon as he accepted the final golden popcorn trophy. "This is the award that means the most to me. I am so grateful and very excited for 2015; we're going to bring you `Avengers 2."'
"The Avengers" also won best fight and best villain for actor Tom Hiddleston, but the movie's big night was somewhat overshadowed when host Wilson shocked the assembled audience when the left side of her dress fell down revealing not one, but two nipples on her left breast.
After flaunting her ample curves throughout the show in several body hugging outfits, Wilson seemed to turn serious.
“Thinking negatively about your body is nothing positive. I was born with a slight deformity,” she announced. “I have learned to love myself, and I want to say to everyone out there that no matter what size or shape you are, just love yourself.”
She then let half of her top fall down, revealing the double whammy.
“Thank you guys. I don’t know why some of you are laughing though, because this is a really serious bit," she said.
A closer review of the tape made it clear Wilson was wearing a rubber prosthetic chest.
Not to be outdone, however, was "Parks and Recreation" star Aubrey Plaza, who took the stage while Will Ferrell was accepting his Comedic Genius award and tried to take it from him. Ferrell wouldn't let go, though, and Plaza gave up and walked back to her seat.
Farrell tried to play it off as a staged gag, but Plaza was reportedly asked to leave the theater, and after the show, Farrell said of her appearance: “It was just a lot of hot liquor breath. And a little bit of sweat. And then she ran away. But the ship sailed on.”
Plaza later tweeted: “Thanks for the advice @kanyewest went better than planned!” referring to West's much-publicized hijacking of a Taylor Swift award moment in 2009.
Host Wilson, who opened and closed the show wearing Iron Man-style armor, won breakthrough performance for her work in "Pitch Perfect" and shared in the film's award for best musical moment. Its stars, including Brittany Snow and Skylar Astin, opened the show with a mash-up medley.
Other musical acts were Macklemore & Ryan Lewis and Selena Gomez, who debuted her new song, "Come and Get It," with a Bollywood-inspired performance.
Bradley Cooper won the first prize of the night for his performance in "Silver Linings Playbook" and returned to the stage to accept best kiss honors for his smooch with co-star Jennifer Lawrence in that film.
Lawrence, who won the Oscar for her role in "Playbook," was also a double winner, though she wasn't on hand Sunday. In addition to the kiss award, she won the golden popcorn for her performance, but the prize wasn't presented on camera.
The MTV Movie Awards are as much about the anticipated movies of the upcoming summer season as they are about the finest films of last year. Fans vote online for the winners in traditional and irreverent categories such as best fight, best kiss and best shirtless performance.
"Twilight" heartthrob Taylor Lautner won the shirtless award.
The show also included new footage from next month's "Iron Man 3" and the world premiere of "The Hunger Games: Catching Fire" trailer, introduced by one of its stars, Liam Hemsworth.
Stars from other summer films-- including Chris Pine, Zoe Saldana and Zachary Quinto from the "Star Trek" sequel and Vin Diesel and Michelle Rodriguez from the "Fast & Furious" franchise -- appeared as presenters during the ceremony.
Other presenters included Brad Pitt, Chris Rock, Adam Sandler, Seth Rogen, Zac Efron, Snoop Dogg/Lion and Kim Kardashian.
Hollywood has increasingly used the fan-driven MTV Movie Awards as a platform to promote its summer product. This year, the show was moved up from June to April to incorporate the entire blockbuster season, which begins in early May.
Honorees and presenters represent upcoming movies, and the ceremony is typically peppered with commercials for forthcoming films and DVD releases.
Emma Watson, a star of this summer's "The Bling Ring," received the Trailblazer Award.
Will Ferrell wore a three-piece suit covered in dollar bills to accept the Comedic Genius Award from "Game of Thrones" star Peter Dinklage.
"For those of you sitting here tonight who don't think I'm funny, I'll be happy to fight you in the parking lot after the show," said Ferrell, who is currently at work on "Anchorman 2," slated for release later this year.
Jamie Foxx was a double winner, too. He shared the best WTF moment award with Samuel L. Jackson for their scenes together in "Django Unchained," and later thanked his daughter, parents and siblings in the audience as he accepted the Generation Award for his career in film.
Foxx stars in June's "White House Down."
The Associated Press contributed to this report.
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