Billboard Music Awards: Who Won What, Plus Watch Britney and Rihanna Perform 'S&M'

The best of the best, and some of the worst, in the music world descended upon Las Vegas this weekend for the 2011 Billboard Music Awards.

The show, hosted by "The Hangover: Part II" star Ken Jeong featured a number of spectacular performances and a few notable duets. Rihanna opened the show with her raunchy hit "S&M" and she was joined on stage by the princess of pop herself, Miss Britney Spears. The sexy twosome wore matching body suits and gave the audience a little pole dancing and a lot of sex appeal.

The night's big winners included Taylor Swift who took home the night's first award, Top Billboard 200 Artist, for her hit disc "Speak Now." The multi-platinum artist also took home the award for Country Artist of the Year beating out the likes of Kenny Chesney and Lady Antebellum.

Other big winners on the night were Beyonce, who received the Billboard Millennium Award for her music and for her foundation's humanitarian work. The breathless singer was presented the award by her mother just after completing a show-stopping performance. B, wearing next-to nothing, sang her new single "Run the World (Girls)." The spectacle was an innovative combination of lights, lasers and hot dance moves.

Justin Bieber made his way to the stage three times during the awards show accepting trophies for Digital Artist of the Year, Fan Favorite and Top New Artist. The teen megastar looked adorable in a gold lamé tuxedo jacket and jeans, thanking his team for keeping him "swagged out."

During Bieber's acceptance speeches the cameras were sure to catch reactions from his mother and adoring girlfriend, Selena Gomez, who looked like quite fond of each other in the crowd.

Rihanna was the recipient of the Top Female Artist award while her "Love the Way You Lie" counterpart, Eminem, took top male honors.

Overall the awards show, which hasn't been televised since 2006, was a great night for music! Check out the complete list of winners after the video.

Watch Rihanna and Britney Spears open the awards show:

2011 Billboard Music Award Winners:

Artists

Top Artist: Eminem

Top New Artist: Justin Bieber

Top Male Artist: Eminem

Top Female Artist: Rihanna

Top Duo/Group: Black Eyed Peas

Top Billboard 200 Artist: Taylor Swift

Top Hot 100 Artist: Katy Perry

Top Digital Songs Artist: Katy Perry

Top Radio Songs Artist: Rihanna

Top Touring Artist: U2

Top Social Artist: Justin Bieber

Top Streaming Artist: Justin Bieber

Top Digital Media Artist: Justin Bieber

Top Pop Artist: Lady GaGa

Top R&B Artist: Usher

Top Rap Artist: Eminem

Top Country Artist: Taylor Swift

Top Rock Artist: Train

Top Alternative Artist: Mumford & Sons

Top Latin Artist: Shakira

Top Dance/Electronic Artist: Lady GaGa

Top Christian Artist: Chris Tomlin

Albums

Top Billboard 200 Album: Eminem - "Recovery"

Top Pop Album: Justin Bieber - "My World 2.0"

Top R&B Album: Usher - "Raymond vs. Raymond"

Top Rap Album: Eminem - "Recovery"

Top Country Album: Taylor Swift - "Speak Now"

Top Rock Album: Mumford & Sons "Sigh No More"

Top Alternative Album: Mumford & Sons "Sigh No More"

Top Latin Album: Enrique Iglesias - "Euphoria"

Top Dance/Electronic/Electronic Album: Lady GaGa - "The Fame"

Top Christian Album: Skillet - "Awake"

Songs

Top Hot 100 Song: Taio Cruz - "Dynamite"

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 ft. Ludacris - "Baby"

Top Pop Song: Taio Cruz - "Dynamite"

Top R&B Song: Usher ft. will.i.am "OMG"

Top Rap Song: Eminem ft. Rihanna - "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 ft. Freshleyground - "Waka Waka (This Time for Africa)"

Top Dance/Electronic Song: Edward Maya & Vika Jigulina - "Stereo Love"

Top Christian Song: Chris Tomlin - "Our God"

Other Awards

Millennium Award: Beyonce Knowles

Icon Award: Neil Diamond

Viral Innovator Award: Cee Lo Green

Fan Favorite Award: Justin Bieber