After recently being named two of the 100 most influential people in the world by TIME Magazine, Rihanna and Adele continue their reign of worldwide domination by leading the finalists for the 2012 Billboard Music Awards.

Homegrown talent Adele is a finalist in 18 of the categories, including Top Artist, Top Female Artist, and Top Billboard 200 Artist.

Rihanna — who was last year’s leader — amasses recognition in 13 categories, including Top Artist, Top Female Artist and Top R&B artist, while Lil’ Wayne and Lady Gaga tied with 10 categories apiece.

The show is set to air from the MGM Grand Arena in Las Vegas on May 20th and will see performances from the likes of Justin Bieber, Carrie Underwood, LMFAO, and The Wanted.

Check out the full list of Finalists below.

Top Artist
Adele
Lady Gaga
Lil Wayne
Katy Perry
Rihanna

Top Hot 100 Song
“Rolling in the Deep” – Adele
“Party Rock Anthem” – LMFAO feat. Lauren Bennett and GoonRock
“Moves Like Jagger” – Maroon 5 feat. Christina Aguilera
“E.T.” – Katy Perry feat. Kanye West
“Give Me Everything” – Pitbull feat. Ne-Yo, Afrojack, and Nayer

Top Billboard 200 Album
21 – Adele
Christmas – Michael Bublé
Take Care – Drake
Born This Way – Lady Gaga
Tha Carter IV – Lil Wayne

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 Hot 100 Artist
Adele
LMFAO
Bruno Mars
Katy Perry
Rihanna

Top Billboard 200 Artist
Adele
Justin Bieber
Michael Bublé
Lady Gaga
Lil Wayne

Top Digital Songs Artist
Adele
LMFAO
Bruno Mars
Katy Perry
Rihanna

Top Radio Songs Artist
Adele
Katy Perry
Bruno Mars
Rihanna
Nicki Minaj

Top R&B Artist
Beyoncé
Chris Brown
Cee Lo Green
Miguel
Rihanna

Top Rap Artist
Drake
Lil Wayne
LMFAO
Wiz Khalifa
Nicki Minaj