Katy Perry has unveiled the official lyric video to her new Juicy J-featuring single Dark Horse, taken from the US star’s latest album, Prism.

The track, which has just hit the top spot over in the US Billboard Charts, is the third release from Perry’s fourth studio outing, and entwines in the week when the star earned the coveted title as the ‘world’s most followed’ on Twitter, amassing her 50 millionth follower on the social network.

Watch the full lyric video below, and hit the iTunes link after the jump to buy Dark Horse, now: