As expected, Adele leads the nominations (seems like she has certainly started the year right) with 18 categories, including some Top Female Artist and Top Artist Award.

"Party rockers," LMFAO, is also a finalist, with a total of 17 categories. The uncanny duo will have to go against Adele for the category of Top Hot 100, which also includes other contenders like Rihanna, Katy Perry, and Bruno Mars.

Lil Wayne has set it on a tie with Lady Gaga, who were both able to grab 10 categories. The two joins the competition with Katy Perry, Adele and Rihanna for the win of the Top New Artist Award.

The awards will be based on the rankings made of each artist on Billboard's exact charts. This will include fan votings, sales and downloads of albums and tracks, the frequency of airplay, and performance over today's highly-used social networking sites.

The reports that will be taken into consideration to determine the winners will be the ones that happened between March 1, 2011 to February 29, 2012.

The 2012 Billboard Music Awards will happen at Las Vegas' MGM Grand, and will be shown live over at ABC.

Check out the slideshow for the ones who made it on the Top Artist list of nominees and other artists for the rest of the categories:

Top Artist:

Adele

Lady Gaga

Lil Wayne

Katy Perry

Rihanna

Top New Artist:

Bad Meets Evil

Big Sean

Foster The People

Scotty McCreery

Wiz Khalifa

Top Male Artist:

Justin Bieber

Chris Brown

Drake

Lil Wayne

Bruno Mars

Top Female Artist:

Adele

Lady Gaga

Nicki Minaj

Katy Perry

Rihanna

Top Duo/Group:

The Black Eyed Peas

Coldplay

Lady Antebellum

LMFAO

Maroon 5

Top Billboard 200 Artist:

Adele

Justin Bieber

Michael Buble

Lady Gaga

Lil Wayne

Top Hot 100 Artist:

Adele

LMFAO

Bruno Mars

Katy Perry

Rihanna

Top Digital Songs Artist:

Adele

LMFAO

Bruno Mars

Katy Perry

Rihanna

Top Radio Songs Artist:

Adele

Katy Perry

Bruno Mars

Nicki Minaj

Rihanna

Top Touring Artist:

Bon Jovi

Taylor Swift

Take That

U2

Roger Waters

Top Social Artist:

Justin Bieber

Eminem

Lady Gaga

Rihanna

Shakira

Top Streaming Artist:

Lil Wayne

LMFAO

Nicki Minaj

Bruno Mars

Rihanna

Top Digital Media Artist:

Adele

Justin Bieber

Lady Gaga

Lil Wayne

Rihanna

Top Pop Artist:

Adele

Lady Gaga

LMFAO

Katy Perry

Rihanna

Top R&B Artist:

Beyonce

Chris Brown

Cee Lo Green

Miguel

Rihanna

Top Rap Artist:

Drake

Lil Wayne

LMFAO

Nicki Minaj

Wiz Khalifa

Top Country Artist:

Jason Aldean

Zac Brown Band

Lady Antebellum

Blake Shelton

Taylor Swift

Top Rock Artist:

The Black Keys

Coldplay

Foster The People

Foo Fighters

Mumford & Sons

Top Alternative Artist:

The Black Keys

Coldplay

Foster The People

Foo Fighters

Mumford & Sons

Top Latin Artist:

Mana

Pitbull

Prince Royce

Romeo Santos

Shakira

Top Dance Artist:

David Guetta

Lady Gaga

LMFAO

Rihanna

Britney Spears

Top Christian Artist:

Casting Crowns

MercyMe

Skillet

Laura Story

Chris Tomlin

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