Rihanna and Britney Kiss on Stage at 2011 Billboard Music Awards--Full Winners List

Eminem and Justin Bieber cleaned house last night at the 2011 Billboard Music Awards in Las Vegas, each taking home 6 trophies. Eminem was absent, but Justin Bieber, who showed up with girlfriend Selena Gomez was more than thrilled to accept his awards on stage.

Rihanna and Britney Spears opened the big show, and surprised the audience with a big on stage kiss. Brit was dressed in white, while Rihanna was wearing a similar bondage style outfit in black—think Madonna 2003 MTV Awards.

It was the first performance of the night for Brit, who later returned to the stage to perform a duet with rapper Nicki Minaj.

Also taking home prizes were Katy Perry - who won Top Digital Songs Artist and Lady Gaga, who won a trio of prizes, and British singer Taio Cruz whose track Dynamite won two awards.

Check out the full winners list below

BILLBOARD AWARDS 2011 WINNERS LIST

Top Artist of the Year: Eminem
Top Hot 100 Song: Taio Cruz - Dynamite
Top Billboard 200 Album: Eminem - Recovery
Top New Artist: Justin Bieber
Top Touring Artist: U2
Top Duo/group: The Black Eyed Peas
Top Country Album: Taylor Swift - Speak Now
Top Rap Album: Eminem - Recovery
Top Rock Album: Mumford & Sons - Sigh No More
Top Social Artist: Justin Bieber
Top Digital Song: Taio Cruz - Dynamite
Top Radio Song: Bruno Mars - Just The Way You Are
Top Streaming Song (Audio): Nelly - Just A Dream
Top Streaming Song (Video): Justin Bieber feat. Ludacris - Baby
Top Billboard 200 Artist: Taylor Swift
Top Hot 100 Artist: Katy Perry
Top Digital Songs Artist: Katy Perry
Top Radio Songs Artist: Rihanna
Top Streaming Artist: Justin Bieber
Top Digital Media Artist: Justin Bieber
Top Male Artist: Eminem
Top Female Artist: Rihanna
Top Rap Artist: Eminem
Top Pop Artist: Lady Gaga
Top R&B Artist: Usher
Top Rock Artist: Train
Top Alternative Artist: Mumford & Sons
Top Country Artist: Taylor Swift
Top Latin Artist: Shakira
Top Dance Artist: Lady Gaga
Top Christian Artist: Chris Tomlin
Top Pop Song: Taio Cruz - Dynamite
Top R&B Song: Usher feat Will.I.Am – OMG
Top Rap Song: Eminem feat Rihanna - I Love The Way You Lie
Top Country Song: Lady Antebellum - Need You Now
Top Rock Song: Train - Hey Soul Sister
Top Alternative Song: Neon Trees - Animal
Top Latin Song: Shakira - Waka Waka (This Time For Africa)
Top Dance Song: Edward Maya & Vika Jigulina - Stereo Love
Top Christian Song: Chris Tomlin - Our God
Top Pop Album: Justin Bieber - My World 2.0 Best R&B Album: Usher - Raymond V Raymond
Top Alternative Album: Mumford & Sons - Sigh No More
Top Latin Album: Enrique Iglesias - Euphoria
Top Dance/Electronic Album: Lady Gaga - The Fame
Top Christian Album: Skillet - Awake
Viral Innovator of the Year: Cee Lo Green
Icon Award: Neil Diamond
Millennium Artist Award: Beyonce