The U Smile singer picked up awards for Favourite Breakthrough Artist, Favourite Pop/Rock Male Artist, Favourite Pop/Rock Album for My World 2.0 and was crowned Favourite Artist of the Year, at the ceremony in Los Angeles last night.
The 16-year old, who also performed his new track, Pray, at the event, took to Twitter to express his delight at winning the most awards, tweeting: “I LOVE MY FANS!!!! WE ARE PARTYIN TONIGHT!!”
He later added: “I can’t stop smiling!! WE DID IT!!! #NEVERSAYNEVER!!!!!!”
Bieber’s mentor Usher also bagged two trophies for Favourite Soul/ R&B Album for Raymond Vs. Raymond and also picked up the gong for Favourite Soul/R&B Male Artist.
Other winners on the night included Taylor Swift, Lady GaGa and Eminem, who also received two awards, but was unable to attend the ceremony.
English rockers Muse also triumphed at the star-studded event, picking up the gong for Favourite Alternative Rock Music Artist.
As well as Bieber, the likes of Katy Perry, Black Eyed Peas and mum-to-be Pink also performed at the Nokia Theatre in LA.
American Music Awards 2010 – Winners List
Favourite Soul/R&B Album: Usher, Raymond v. Raymond
Favourite Pop Rock Band/Duo/Group: The Black Eyed Peas
Favourite Country Female Artist: Taylor Swift
Favourite Latin Music Artist: Shakira
Favourite Soul/R&B Female Artist: Rihanna
Favourite Country Male Artist: Brad Paisley
Favourite Breakthrough Artist: Justin Bieber
Favourite Pop/Rock Male Artist: Justin Bieber
Favourite Country Band/Duo/Group: Lady Antebellum
Favourite Alternative Rock Music Artist: Muse
Favourite Adult Contemporary Music Artist: Michael Bublé
Favourite Soul/R&B Male Artist: Usher
Favourite Artist of the Year: Justin Bieber
Favourite Country Album: Carrie Underwood, Play On
Favourite Rap/Hip-Hop Male Artist: Eminem
Favourite Pop/Rock Album: Justin Bieber, ‘My World 2.0’
Favourite Pop/Rock Female Artist: Lady Gaga
Favourite Contemporary Inspirational Artist: MercyMe
Favourite Rap/Hip-Hop Album: Eminem, ‘Recovery’
Favourite Soundtrack Album: ‘Glee: The Music, Volume 3 Showstoppers’
Nicki Minaj turned heads in a outfit choice that would give Lady Gaga a run for her money. Check out the pictures below: