iHeartRadio Music Awards: Winners & Best Moments of the Night

[photo: Getty Images]

PHOTOS: Best Dressed at the iHeartRadio Music Awards

The 2015 iHeartRadio Music Awards aired live March 29 at 8pm ET/PT on NBC, and simultaneously on iHeartMedia stations nationwide and across the iHeartRadio digital music platform.

List of Winners:

Artist of the Year
Ariana Grande
Iggy Azalea
Luke Bryan
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
Bastille
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