iHeartRadio Music Awards 2015 Winners (Complete List) – Taylor Swift, Sam Smith & More. The iHeartRadio Music Awards were a roaring success! And not just because of all the hot performances. Some of Hollywood's fave stars like Taylor Swift and Justin Timberlake took home big awards! Check out the complete list of winners : ARTIST OF THE YEAR Taylor Swift SONG OF THE YEAR Shake It Off — Taylor Swift ALTERNATIVE ROCK SONG OF THE YEAR Take Me to Church — Hozier DANCE SONG OF THE YEAR Summer — Calvin Harris RENEGADE Brantley Gilbert BEST COLLABORATION Bang Bang — Jessie J, Ariana Grande and Nicki Minaj BEST FAN ARMY 5SOSFAM — 5 Seconds of Summer COUNTRY SONG OF THE YEAR Burnin' It Down — Jason Aldean BEST NEW ARTIST Sam Smith HIP HOP/R&B SONG OF THE YEAR Don't Tell ‘Em — Jeremih featuring YG BEST LYRICS Blank Space — Taylor Swift
