Some of the biggest names in music were at the MGM Grand Garden Arena in Las Vegas for the 2015 Billboard Music Awards Sunday night (May 17). Ludacris and Chrissy Teigen hosted the ceremony, which was loaded with special performances from Kanye West, Nicki Minaj, Mariah Carey, Chris Brown and John Legend, among others. If you aren't particularly into keeping up with award ceremonies, we've got you covered with the list of winners.

British crooner Sam Smith snagged honors in the Top Male Artist and Top New Artist categories while fellow singer John Legend's big hit "All of Me" earned the award for Top Radio Song. Pharrell was the big winner when it came to R&B. Skateboard P took home trophies for Top R&B Artist and Top R&B Album. The BeyHive was likely stinging mad since he beat Beyonce in bother categories.

When it came to rap, Iggy Azalea earned quite a few honors for the night with Top Rap Song, Top Streaming Artist and Top Rap Artist wins. Drake, Nicki Minaj, Rae Sremmurd and J. Cole fell flat in the latter category, but the 2014 Forest Hills Drive creator came out on top with Top Rap Album.

Check out more of the night's winners below.

Top Artist

Ariana Grande
One Direction
Katy Perry
Sam Smith
Taylor Swift -- WINNER

Top New Artist
5 Seconds of Summer
Iggy Azalea
Hozier
Sam Smith -- WINNER
Meghan Trainor

Top Male Artist
Drake
Pharrell Williams
Ed Sheeran
Sam Smith -- WINNER
Justin Timberlake

Top Female Artist
Iggy Azalea
Ariana Grande
Katy Perry
Taylor Swift -- WINNER
Meghan Trainor

Top Billboard 200 Artist
One Direction
Pentatonix
Ed Sheeran
Sam Smith
Taylor Swift -- WINNER

Top Hot 100 Artist
Iggy Azalea
Ariana Grande
Sam Smith
Taylor Swift -- WINNER
Meghan Trainor

Top Digital Songs Artist
Iggy Azalea
Ed Sheeran
Sam Smith
Taylor Swift -- WINNER
Meghan Trainor

Top Radio Song
John Legend, "All of Me" -- WINNER
MAGIC!, "Rude"
Nico & Vinz, "Am I Wrong"
Sam Smith, "Stay With Me"
Pharrell Williams, "Happy

Top Touring Artist
Lady Gaga
One Direction -- WINNER
Katy Perry
The Rolling Stones
Justin Timberlake

Top Social Artist
Justin Bieber -- WINNER
Miley Cyrus
Selena Gomez
Ariana Grande
Taylor Swift

Top Streaming Artist
Iggy Azalea -- WINNER
Ariana Grande
Nicki Minaj
Taylor Swift
Meghan Trainor

Top R&B Artist
Beyonce
Chris Brown
John Legend
Trey Songz
Pharrell Williams -- WINNER

Top Rap Artist
Iggy Azalea -- WINNER
J. Cole
Drake
Nicki Minaj
Rae Sremmurd

Top Christian Artist
Casting Crowns
Hillsong United -- WINNER
Lecrae
MercyMe
Newsboys

Top Billboard 200 Album
Maroon 5, V
Pentatonix, That’s Christmas to Me
Ed Sheeran, x
Sam Smith, In the Lonely Hour
Taylor Swift, 1989 -- WINNER

Top R&B Album
Beyonce, Beyonce
Chris Brown, X
Michael Jackson, Xscape
John Legend, Love in the Future
Pharrell Williams, G I R L -- WINNER

Top Rap Album
J. Cole, 2014 Forest Hills Drive -- WINNER
Drake, If You’re Reading This It’s Too Late
Nicki Minaj, The Pinkprint
Iggy Azalea, The New Classic
Eminem, The Marshall Mathers LP 2

Top Christian Album
Lecrae, Anomaly -- WINNER
Casting Crowns, Thrive
MercyMe, Welcome to the New
NEEDTOBREATHE, Rivers in the Wasteland
Chris Tomlin, Love Ran Red

Top Hot 100 Song
Iggy Azalea feat. Charli XCX, “Fancy”
John Legend, “All of Me”
Sam Smith, “Stay With Me”
Taylor Swift, “Shake It Off”
Meghan Trainor, “All About That Bass” -- WINNER

Top Digital Song
Mark Ronson feat. Bruno Mars, “Uptown Funk!”
Sam Smith, “Stay With Me”
Taylor Swift, “Shake It Off”
Meghan Trainor, “All About That Bass”  -- WINNER
Pharrell Williams, “Happy

Top Streaming Song (Audio)
Iggy Azalea feat. Charli XCX, “Fancy”
Hozier, “Take Me to Church”
John Legend, “All of Me” -- WINNER
Sam Smith, “Stay With Me”
Tove Lo, “Habits (Stay High)”

Top Streaming Song (Video)
Idina Menzel, “Let It Go”
Bobby Shmurda, “Hot Boy”
Taylor Swift, “Blank Space”
Taylor Swift, “Shake It Off” -- WINNER
Meghan Trainor, “All About That Bass”

Top R&B Song
Chris Brown feat. Lil Wayne, French Montana, Too $hort & Tyga, “Loyal”
Jason Derulo feat. 2 Chainz, “Talk Dirty”
Jeremih feat. YG, “Don’t Tell ‘Em”
John Legend, “All of Me”
Pharrell Williams, “Happy” -- WINNER

Top Rap Song
Iggy Azalea feat. Charli XCX, “Fancy” -- WINNER
Iggy Azalea feat. Rita Ora, “Black Widow”
Big Sean feat. E-40, “I Don’t F— With You”
Nicki Minaj, “Anaconda”
Bobby Shmurda, “Hot Boy”

Top Dance/Electronic Song
Clean Bandit feat. Jess Glynne, “Rather Be”
Disclosure feat. Sam Smith, “Latch”
DJ Snake & Lil Jon, “Turn Down For What” -- WINNER
Ariana Grande feat. Zedd, “Break Free”
Calvin Harris, “Summer”

Billboard Chart Achievement Award Presented by Samsung Galaxy (Fan-Voted)
Iggy Azalea
Taylor Swift -- WINNER
Meghan Trainor

See Your Favorite Rappers & Singers on the Red Carpet at 2015 Billboard Music Awards