Taylor Swift and Sia have topped Billboard magazine's newly-released end-of-year best albums and singles polls.

Swift's 1989 has beaten out Run The Jewels Ii by Run The Jewels and Sam Smith's In The Lonely Hour for the top album honour, while Sia's Chandelier has come out on top of the best singles list, ahead of Kendrick Lamar's i and Hozier's Take Me To Church.

Jason Aldean's Burnin' It Down and Clean Bandit's Rather Be also make the singles top five, while Jenny Lewis' The Yoyager and X by Ed Sheeran round out the best albums top five.