Photos: Bieber wins, fans swoon at the MMVAs

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Musicians and entertainers from around the world gathered tonight at MuchMusic Video Awards in Toronto to celebrate the year's best music videos. The event features performances by LMFAO, Marianas Trench, Justin Bieber and many others.

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Katy Perry performs in a butterfly costume at the MMVAs.
(Chris Young/The Canadian Press)
Hedley performs during the MMVAs.
(Nathan Denette/The Canadian Press)
Justin Bieber greets fans from the stage during the MMVAs.
(Mike Cassese/Reuters)
Justin Bieber accepts his award for Best International Video of the Year by a Canadian from Lauren Toyota during the MMVAs.
(Mike Cassese/Reuters)
Marianas Trench perform during the 2012 MMVAs
(Nathan Denette/The Canadian Press)
Nelly Furtado performs during the MMVAs.
(Mike Cassese/Reuters)
Flo-Rida performs with Carly Rae Jepsen at the MMVAs.
(Chris Young/The Canadian Press)
Carly Rae Jepson performs her pop single "Call Me Maybe," which is nominated for Video of the Year, Pop Video of the Year and Most Streamed Video of the Year.
(Mike Cassese/Reuters)
Carly Rae Jepsen and Flo-Rida serenade each other at the MMVAs.
(Chris Young/THE CANADIAN PRESS)
LMFAO spray liquid during their performance at the MMVAs.
(Mike Cassese/Reuters)
LMFAO performs their hit song "Sexy and I Know It," which is nominated for Most Streamed Video of the Year.
(Mike Cassese/Reuters)
Canadian musician Diamond Rings arrives on the red carpet.
(Chris Young/The Canadian Press)
Katy Perry arrives on the red carpet with kids dressed as characters from her music videos.
(Chris Young/The Canadian Press)
Quebec band The New Cities is nominated for Post Production of the Year for their video "Heatwave."
(Mike Cassese/Reuters)
Performer Ed Sheeran is mobbed by fans as he arrives. Sheeran is one of 11 performances set to take the stage at the Toronto awards event.
(Brent Gundlock/Reuters)
Nelly Furtado waves to the hoards of fans gathered in downtown Toronto.
(Chris Young/THE CANADIAN PRESS)
Hip-hop group Far East Movement arrives on the red carpet.
(Mike Cassese/Reuters)
Marianas Trench have nine nominations for their videos "Fallout" and "Haven't Had Enough."
(Mike Cassese/Reuters)
Performer Kreesha Turner poses after a brief red carpet performance with her entourage.
(Mike Cassese/Reuters)
The hard rock band F*cked Up are nominated for Rock Video of the Year for their song "Queen of Hearts."
(Mike Cassese/Reuters)
Celebrity blogger Perez Hilton arrives on the red carpet clad in a sparkle bow tie and afro wig.
(Mike Cassese/Reuters)
Musician Carly Rae Jepson rides in a vintage Ford Mustang convertible with a few male chaperones.
(Mike Cassese/Reuters)
Members of the pop-rock band Faber Drive arrive at the MMVAs.
(Mike Cassese/Reuters)
Actress and singer Selena Gomez poses on the red carpet.
(Mike Cassese/Reuters)
Justin Bieber greets a swarm of elated fans on the red carpet.
(Mike Cassese/Reuters)
Performer Justin Bieber carries his two-year-old brother Jaxon.
(Mike Cassese/Reuters)
Canadian rockers The Sheepdogs are nominated for Rock Video of the Year for their song "I Don't Know."
(Mike Cassese/Reuters)