LOS ANGELES (AP) - The stars have begun their walk down the long blue carpet at the 2015 MTV Movie Awards, with Jennifer Lopez, Kelly Osbourne, singer Jesse J and "Friday Night Lights" alum Zach Gilford among the early arrivals.

LOS ANGELES (AP) The stars have begun their walk down the long blue carpet at the 2015 MTV Movie Awards, with Jennifer Lopez, Kelly Osbourne, singer Jesse J and "Friday Night Lights" alum Zach Gilford among the early arrivals.

Amy Schumer is hosting the Sunday night ceremony at the Nokia Theatre in Los Angeles, to be broadcast live from 8-10 p.m. EDT on MTV and VH1.

The irreverent show doles out such cheeky honors as best kiss and best shirtless performance, but also to serve as an unofficial promotional platform for the upcoming blockbuster season.

On the steamy afternoon, "Teen Wolf's" Tyler Posey sported a weather appropriate look of denim shorts and sneakers without socks.

"You can just have so much fun," he said of the show. "It's silly and there's usually a lot of alcohol."

"This is definitely not the Oscars," added "22 Jump Street" actress Jillian Bell. "You can wear whatever you want."

Films such as teen tearjerker "The Fault in Our Stars," Marvel space adventure "Guardians of the Galaxy" and coed comedy "Neighbors" will be competing for the fan-voted Golden Popcorn statuettes. In addition to the kiss and shirtless categories, other wacky awards include best villain, best WTF moment and best scared-as-s--t performance. Vin Diesel, Sofia Vergara and Mark Wahlberg are among the presenters.

Gilford, a nominee for the scared-as-s--t award for "The Purge: Anarchy" said he grew up watching the show.

"It's surreal to be here and be nominated," Gilford said.

But the real focus will be on what's coming up at the multiplex this summer, with previews planned for "Avengers: Age of Ultron," ''Paper Towns" and "Pitch Perfect 2."

Robert Downey Jr. is picking up a special award and will be joined onstage by "Avengers" co-stars Chris Evans, Scarlett Johansson and Chris Hemsworth. But there's an agenda behind the accolade, of course: the promotion of "Ultron."

Stars like Rebel Wilson from other summer films are also expected to appear on the show in support of their projects.

Even host Schumer has a film to promote: "Trainwreck," a relationship comedy from director Judd Apatow that Schumer wrote and stars in.

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Entertainment Writer Derrik J. Lang also contributed to this report.

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Follow AP Film Writer Lindsey Bahr on Twitter: www.twitter.com/ldbahr

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Online: http://www.mtv.com/ontv/movieawards