Taylor Swift, Justin Bieber win big at iHeartRadio AwardsLos Angeles, Apr 4(AZINS) Singer Taylor Swift emerged as the top winner at the iHeartRadio Awards by bagging four honours, including album of the year for "1989", while pop star Justin Bieber came close with three trophies.

"1989" beat Adele's "25", "Beauty Behind the Madness" by The Weeknd, "In the Lonely Hour" (Sam Smith) and "X" (Ed Sheeran) to become the winner.

Swift's other honours included artist of the year, best tour and most meme-able moment. Bieber, 22, became the artist of the year. He also bagged trophies for best dance song of the year ('Where Are U Now?') and best fan army.

"Hello" from "25" became song of the year, defeating "Can't Feel My Face" (The Weeknd), "Shut Up and Dance" (Walk The Moon) and "Uptown Funk" by Mark Ronson featuring Bruno Mars.

Fetty Wap as announced as the best new artist. Maroon 5 won the best duo/group award, while popular group Foo Fighters received the award for best rock artist of the year.

In a new category, Luke Bryan won the award for country artist of the year. Swift's boyfriend Calvin Harris bagged the dance artist of the year trophy. Hip hop artist of the year award went to Drake.

Pitbull received the Latin artist of the year honour.

Selena Gomez won the triple threat award as the singer has dabbled into dancing and acting besides a full fledged singing career.

"Uptown Funk", by Mark Ronson featuring Bruno Mars, got the best collaboration. Lady Gaga's "Till It Happens To You" won the best song in a movie award.

R&B song of the year trophy went to "Earned it" by The Weeknd, while Drake's "Hotline Bling" won the R&B song of the year award.

Rock song of the year award went to "Heavy Is The Head" by Zac Brown band featuring Chris Cornell.