The 2015 iHeartRadio Music! Awards wrapped Sunday night (March 29) at the Shrine Auditorium in Los Angeles. Taylor Swift was this year's big winner, nabbing trophies for Artist of the Year, Lyrics of the Year (for "Blanks Space") and Song of the Year (for "Shake It Off," natch.)

We love how unique the show's categories are — from Renegade Award to Best Fan Army (don't mess with the 5SOS Fam!). Check out all of the winners below!

Artist of the Year
Iggy Azalea
Luke Bryan
Ariana Grande
Sam Smith
Taylor Swift -- WINNER

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 and 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
Iggy Azalea
Sam Smith -- WINNER
Cole Swindell
Meghan Trainor

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 -- WINNER
“La La La” — Naughty Boy featuring Sam Smith
“Summer” — Calvin Harris
“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

Iggy Azalea
Charli XCX
Brantley Gilbert -- WINNER
Meghan Trainor

See the Best Dressed Celebs at the 2015 iHeartRadio Music Awards