Beiber or Gaga-- who will take Top Artist at the 2011 Billboard Music Awards tomorrow night?  Check out all the nominees below. The live show starts at 8 PM on ABC.   Rihanna, The Black Eyed Peas, and Taio Cruz are all performing! For live updates, follow Billboard on Twitter.

ARTIST AWARDS:

Top Artist:
Justin Bieber
Eminem
Lady Gaga
Rihanna
Taylor Swift

Top New Artist:
Justin Bieber
Taio Cruz
Ke$ha
Bruno Mars
Nicki Minaj

Top Male Artist:
Justin Bieber
Drake
Eminem
Bruno Mars
Usher

Top Female Artist:
Ke$ha
Lady Gaga
Katy Perry
Rihanna
Taylor Swift

Top Duo/Group:
The Black Eyed Peas
Bon Jovi
Lady Antebellum
Linkin Park
U2

Top Billboard 200 Artist:
Justin Bieber
Susan Boyle
Eminem
Lady Antebellum
Taylor Swift

Top Hot 100 Artist:
Ke$ha
Bruno Mars
Katy Perry
Rihanna
Usher

Top Digital Songs Artist:
Eminem
Ke$ha
Bruno Mars
Katy Perry
Rihanna

Top Radio Songs Artist:
Drake
Bruno Mars
Katy Perry
Rihanna
Usher

Top Touring Artist:
Bon Jovi
Michael Buble
Lady Gaga
U2

Roger Waters

Top Social Artist:
Akon
Justin Bieber
Eminem
Lady Gaga
Rihanna

Top Streaming Artist:
Justin Bieber
Eminem
Lady Gaga
Rihanna
Shakira

Top Digital Media Artist:
Akon
Justin Bieber
Eminem
Lady Gaga
Rihanna

Top Pop Artist:
Justin Bieber
The Black Eyed Peas
Ke$ha
Lady Gaga
Katy Perry

Top R&B Artist:
Alicia Keys
Monica
Rihanna
Trey Songz
Usher

Top Rap Artist:
Drake
Eminem
Lil Wayne
Ludacris
Nicki Minaj

Top Country Artist:
Jason Aldean
Kenny Chesney
Lady Antebellum
Taylor Swift
Zac Brown Band

Top Rock Artist:
Kings of Leon
Linkin Park
Mumford & Sons
Muse
Train

Top Alternative Artist:
The Black Keys
Kings of Leon
Linkin Park
Mumford & Sons
Muse

Top Latin Artist:
Enrique Iglesias
Pitbull
Prince Royce
Shakira
Wisin & Yandel

Top Dance Artist:
The Black Eyed Peas
David Guetta
Lady Gaga
LaRoux
Rihanna

Top Christian Artist:
Casting Crowns
MercyMe
Skillet
tobyMac
Chris Tomlin

ALBUMS AWARDS

Top Billboard 200 Album:
Justin Bieber -- "My World 2.0"
Susan Boyle -- "The Gift"
Eminem -- "Recovery"
Lady Antebellum -- "Need You Now"
Taylor Swift -- "Speak Now"

Top Pop Album:
Justin Bieber -- "My World 2.0"
Black Eyed Peas -- "The E.N.D."
Ke$ha -- "Animal"
Lady Gaga -- "The Fame"
Katy Perry -- "Teenage Dream"

Top R&B Album:
Monica -- "Still Standing"
Rihanna -- "Loud"
Sade -- "Stronger Than Love"
Trey Songz -- "Passion, Pain & Pleasure"
Usher -- "Raymond v. Raymond"

Top Rap Album:
Drake -- "Thank Me Later"
Eminem -- "Recovery"
Nicki Minaj -- "Pink Friday"
Lil Wayne -- "I Am Not A Human Being"
Kanye West -- "My Beautiful Dark Twisted Fantasy"

Top Country Album:
Jason Aldean -- "My Kinda Party"
Lady Antebellum -- "Need You Now"
Sugarland -- "The Incredible Machine"
Taylor Swift -- "Speak Now"
Zac Brown Band -- "The Foundation"

Top Rock Album:
The Black Keys -- "Brothers"
Jack Johnson -- "To The Sea"
Kid Rock -- "Born Free"
Linkin Park -- "A Thousand Suns"
Mumford & Sons -- "Sigh No More"

Top Alternative Album:
The Black Keys -- "Brothers"
Jack Johnson -- "To The Sea"
Kings of Leon -- "Come Around Midnight"
Linkin Park -- "A Thousand Suns"
Mumford & Sons -- "Sigh No More"

Top Latin Album:
Marc Anthony -- "Iconos"
Camila -- "Dejarte De Amar"
Enrique Iglesias -- "Euphoria"
Prince Royce -- "Prince Royce"
Shakira -- "Sale El Sol"

Top Dance/Electronic Album:
Daft Punk -- "Tron Legacy (Soundtrack)"
Lady Gaga -- "The Fame"
Lady Gaga -- "The Fame Monster"
Lady Gaga -- "The Remix"
Owl City -- "Ocean Eyes"

Top Christian Album:
MercyMe -- "The Generous Mr. Lovewell"
Skillet -- "Awake"
tobyMac -- "Tonight"
Chris Tomlin -- "And If Our God is For Us"
Various Artists -- "WOW Hits 2011"

SONG AWARDS

Top Hot 100 Song:
Taio Cruz -- "Dynamite"
Eminem Feat. Rihanna -- "Love The Way You Lie"
Bruno Mars -- "Just The Way You Are"
Katy Perry Feat. Snoop Dogg -- "California Gurls"
Usher Feat. will.i.am -- "OMG"

Top Digital Song:
B.o.B Feat. Hayley Williams -- "Airplanes"
Taio Cruz -- "Dynamite"
Eminem Feat. Rihanna -- "Love The Way You Lie"
Bruno Mars -- "Just The Way You Are"
Katy Perry Feat. Snoop Dogg -- "California Gurls"

Top Radio Song:
Taio Cruz -- "Dynamite"
Eminem Feat. Rihanna -- "Love The Way You Lie"
Bruno Mars -- "Just The Way You Are"
Usher Featuring Pitbull -- "DJ Got Us Fallin' In Love"
Usher Feat. will.i.am -- "OMG"

Top Streaming Song (Audio):
Taio Cruz -- "Dynamite"
Eminem Feat. Rihanna -- "Love The Way You Lie"
Lady Antebellum -- "Need You Now"
Bruno Mars -- "Just The Way You Are"
Nelly -- "Just A Dream"

Top Streaming Song (Video):
Justin Bieber Feat. Ludacris -- "Baby"
Eminem -- "Not Afraid"
Eminem Feat. Rihanna -- "Love The Way You Lie"
Lady Gaga -- "Bad Romance"
Shakira Feat. Freshleyground -- "Waka Waka (This Time For Africa)"

Top Pop Song:
Taio Cruz -- "Dynamite"
Bruno Mars -- "Just The Way You Are"
Katy Perry Feat. Snoop Dogg -- "California Gurls"
Katy Perry -- "Firework"
Katy Perry -- "Teenage Dream"

Top R&B Song:
Alicia Keys -- "Unthinkable (I'm Ready)"
Rihanna Featuring Drake -- "What's My Name"
Trey Songz Feat. Nicki Minaj -- "Bottoms Up"
Usher Feat. will.i.am -- "OMG"
Usher -- "There Goes My Baby"

Top Rap Song:
B.o.B Feat. Hayley Williams -- "Airplanes"
B.o.B Feat. Bruno Mars -- "Nothin' On You"
Eminem Feat. Rihanna -- "Love The Way You Lie"
Far*East Movement Feat. Dev & The Cataracs -- "Like A G6"
Nelly -- "Just A Dream"

Top Country Song:
The Band Perry -- "If I Die Young"
Lady Antebellum -- "Need You Now"
Miranda Lambert -- "The House That Built Me"
Sugarland -- "Stuck Like Glue"
Taylor Swift -- "Mine"

Top Rock Song:
The Dirty Heads Featuring Rome -- "Lay Me Down"
Florence + The Machine -- "Dog Days Are Over"
Mumford & Sons -- "Little Lion Man"
Neon Trees -- "Animal"
Train -- "Hey, Soul Sister"

Top Alternative Song:
Florence + The Machine -- "Dog Days Are Over"
Linkin Park -- "Waiting On The End"
Mumford & Sons -- "The Cave"
Mumford & Sons -- "Little Lion Man"
Neon Trees -- "Animal"

Top Latin Song:
Enrique Iglesias Featuring Juan Luis Guerra "Cuando Me Enamoro"
Pitbull -- "Bon Bon"
Shakira -- "Gypsy"
Shakira Feat. El Cata -- "Loca"
Shakira Feat. Freshleyground -- "Waka Waka (This Time For Africa)"

Top Dance Song:
Lady Gaga -- "Bad Romance"
Lady Gaga Feat. Beyonce -- "Telephone"
La Roux -- "Bulletproof"
Edward Maya & Vika Jigulina -- "Stereo Love"
Yolanda Be Cool & Dcup -- "We Speak No Americano"

Top Christian Song:
Kris Allen -- "Live Like We're Dying"
MercyMe -- "All Of Creation"
Sanctus Real -- "Lead Me"
tobyMac -- "Get Back Up"
Chris Tomlin -- "Our God"