The 2015 iHeartRadio Music Awards brought incredible performances and lots of star power to the Shrine Auditorium in Los Angeles Sunday night, but there's really only one reason everyone showed up: the awards, of course!

Check out the full list of 2015 iHeartRadio Music Award winners and let us know if you agree.

2015 iHeartRadio Innovator Award

Justin Timberlake

Artist of the Year

Ariana Grande
Iggy Azalea
Luke Bryan
Sam Smith
Taylor Swift - Taylor Swift

Song of the Year

"All About That Bass" - Meghan Trainor
"All of Me" - John Legend
"Happy" - Pharrell Williams
"Shake It Off" - Taylor Swift - WINNER
"Stay With Me" - Sam Smith

Best Collaboration

"Bang Bang" - Jessie J + Ariana Grande + Nicki Minaj - WINNER
"Dark Horse" - Katy Perry featuring Juicy J
"Fancy" - Iggy Azalea featuring Charli XCX
"Problem" - Ariana Grande featuring Iggy Azalea
"Talk Dirty" - Jason Derulo featuring 2 Chainz

Best New Artist

Cole Swindell
Iggy Azalea
Meghan Trainor
Sam Smith - WINNER

Country Song of the Year

"Bartender" - Lady Antebellum
"Burnin' It Down" - Jason Aldean - WINNER
"Dirt" - Florida Georgia Line
"Give Me Back My Hometown" - Eric Church
"Play It Again" - Luke Bryan

Hip Hop/R&B Song of the Year

"Don't Tell 'Em" - Jeremih featuring YG - WINNER
"Drunk in Love" - Beyoncé featuring Jay Z
"Flawless" - Beyoncé
"Loyal" - Chris Brown featuring Lil Wayne and Tyga
"New Flame" - Chris Brown featuring Usher and Rick Ross

Dance Song of the Year

"Animals" - Martin Garrix
"Blame" - Calvin Harris featuring John Newman
"La La La" - Naughty Boy featuring Sam Smith
"Summer" - Calvin Harris - WINNER
"Waves" - Mr. Probz

Alternative Rock Song of the Year

"Come With Me Now" - KONGOS
"Do I Wanna Know?" - Arctic Monkeys
"Fever" - The Black Keys
"Something From Nothing" - Foo Fighters
"Take Me to Church" - Hozier - WINNER

Best Lyrics

"All of Me" - John Legend
"Blank Space" - Taylor Swift - WINNER
"Counting Stars" - OneRepublic
"Habits (Stay High)" - Tove Lo
"Stay With Me" - Sam Smith
"Thinking Out Loud" - Ed Sheeran

Best Fan Army

5SOSFAM - 5 Seconds of Summer - WINNER
Arianators - Ariana Grande
Bey Hive - Beyoncé
Team Breezy - Chris Brown
Sheerios - Ed Sheeran
Church Choir - Eric Church
Directioners - One Direction
Selenators - Selena Gomez
Mendes Army - Shawn Mendes
Swifties - Taylor Swift

Renegade Award

Brantley Gilbert - WINNER
Charli XCX
Iggy Azalea
Meghan Trainor