Teen pop star Justin Bieber stole the show at the 40th American Music Awards 2012 (AMA) on Sunday night, walking away with three awards including the top award - Artist of the Year - beating Drake, Maroon 5, Katy Perry and Rihanna.

Justin Bieber bagged awards - Artist of the Year, Pop/Rock Favourite Male Artist and Pop/Rock Favourite Album for "Believe".

[PHOTOS OF CELEBRITIES AT AMERICAN MUSIC AWARDS 2012]

Other artiste, who walked away with multiple awards, was rapper Nicki Minaj. She bagged two awards - Favourite Rap/Hip-Hop Artist and Favourite Rap/Hip-Hop Album.

The other winners at the AMA 2012 include Taylor Swift - country female artist, Rihanna - Soul/R&B album, Katy Perry - pop/rock female artist, Carly Rae Jepsen - new artist of the year, Maroon 5 - pop/rock band, duo or group and Adele - Adult contemporary artist.

Here is the complete list of the winners at the American Music Awards 2012:

[PHOTOS OF CELEBRITIES AT AMERICAN MUSIC AWARDS 2012] 

Artist of the Year: Justin Bieber

New Artist of the Year: Carly Rae Jepsen

Favourite Male Artist - Pop/Rock: Justin Bieber

Favourite Album - Pop/Rock: Justin Bieber - Believe

Favourite Male Artist - Country: Luke Bryan

Favourite Female Artist - Country: Taylor Swift

Favourite Band, Duo or Group - Country: Lady Antebellum

Favourite Album - Country: Carrie Underwood - Blown Away

Favourite Artist - Rap/Hip-Hop: Nicki Minaj

Favourite Album - Rap/Hip-Hop: Nicki Minaj - Pink Friday: Roman Reloaded

Favourite Male Artist - Soul/R&B: Usher

Favourite Artist - Alternative Rock: Linkin Park

Favorite Artist - Electronic Dance Music (EDM): David Guetta

Favourite Female Artist - Pop / Rock: Katy Perry

Favourite Band, Duo or Group - Pop / Rock: Maroon 5

Favourite Female Artist - Soul/R&B: Beyonce

Favourite Album - Soul/R&B: Rihanna, Talk That Talk

Favourite Artist - Adult Contemporary: Adele

Favourite Artist - Latin: Shakira

Favourite Artist - Contemporary Inspirational: tobyMac

[PHOTOS OF CELEBRITIES AT AMERICAN MUSIC AWARDS 2012] 

Presenter Jenny McCarthy kisses Justin Bieber as he accepts the award for favorite pop rock album at the 40th American Music Awards in Los Angeles

Singer Carly Rae Jepson performs at the 40th American Music Awards in Los Angeles

Christina Aguilera performs at the 40th American Music Awards in Los Angeles

Usher performs at the 40th American Music Awards in Los Angeles

Pink performs at the 40th American Music Awards in Los Angeles

Taylor Swift performs at the 40th American Music Awards in Los Angeles

Actor Eric Stonestreet presents the award for favorite country female artist to Taylor Swift at the 40th American Music Awards in Los Angeles

Kesha performs "Die Young" at the 40th American Music Awards in Los Angeles

Justin Bieber

Cyndi Lauper introduces the performance by Kesha at the 40th American Music Awards in Los Angeles

Nathan Sykes of The Wanted performs at the 40th American Music Awards in Los Angeles

Kelly Clarkson performs a medley of songs at the 40th American Music Awards in Los Angeles

Usher accepts the award for favorite soul R&B male artist at the 40th American Music Awards in Los Angeles

Nicki Minaj accepts the award for favorite rap hip hop album at the 40th American Music Awards in Los Angeles

Luke Bryan accepts the award for favorite country male artist at the 40th American Music Awards in Los Angeles

Gwen Stefani of No Doubt performs at the 40th American Music Awards in Los Angeles

Justin Bieber accepts the award for favorite pop/rock male at the 40th American Music Awards in Los Angeles

Carly Rae Jepsen

Chester Bennington of Linkin Park performs at the 40th American Music Awards in Los Angeles

Lady Antebellum accept the award for favorite country band duo or group at the 40th American Music Awards in Los Angeles

Nicki Minaj performs at the 40th American Music Awards in Los Angeles

Pitbull performs at the 40th American Music Awards in Los Angeles

Pitbull and Christina Aguilera perform at the 40th American Music Awards in Los Angeles

Carrie Underwood performs at the 40th American Music Awards in Los Angeles

Swizz Beatz, Chris Brown and Ludacris perform at the 40th American Music Awards in Los Angeles

Justin Bieber performs at the 40th American Music Awards in Los Angeles

Nicki Minaj accepts the award for favorite rap/hip hop artist at the 40th American Music Awards in Los Angeles

Carrie Underwood accepts the award for favorite country album at the 40th American Music Awards in Los Angeles

Stevie Wonder performs during a tribute to Dick Clark at the 40th American Music Awards in Los Angeles

PSY: This Korean rapper’s journey to success is rather wacky. His "Gangnam Style" music video went viral and climbed to No. 1 on radio stations and went on to beat Justin Bieber as the most played video on YouTube. He also performed the song at the American Music Awards.