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Lady Gaga, Justin Bieber and a Streaker Hit the MTV Europe Music Awards!

by Tierney Bricker Sun., Nov. 6, 2011 7:35 PM PST

Kevin Mazur/WireImage.com

Want to get people talking about your event? You could invite Coldplay, Lady Gaga, Justin Bieber and other big music megastars.

Or you could just let a streaker crash the party!

That's exactly what happened at the MTV Europe Music Awards in Belfast, Northern Ireland, when a nude young fellow joined actress Hayden Panettiere on stage to present the award for Best, er, Song. To say the crowd and Panettiere were a bit stunned is a bit of an understatement.

What else went down at the Selena Gomez-hosted show? And who won big?

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Lady Gaga was the big winner of the night, taking home four awards: Best Song, Best Video, Best Female and Biggest Fans. "Thank you for believing in my vision," the singer told the crowd. "The success of Born This Way has changed my life." Gaga also performed at the show, singing her latest single "Marry The Night."

Though he didn't win Biggest Fans (how coudl that be, Beliebers?!), Bieber still won two awards: Best Male and Best Pop. Bieber performed "Under The Mistletoe" and "Never Say Never."

Rocking retro pink hair, Katy Perry took home the award for Best Live Performer, besting Gaga, Coldplay, who opened the show, and Foo Fighters.

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Complete list of winners: