[Image via FameFlynetpictures.]
Katy Perry, Lorde, & Ellie Goulding Took Their Threesome To The Dance Floor! Watch Them Shake It HERE!
The new bestiez were more in step with one another by the time they busted a move to Katy's Dark Horse! What, like Ellie WASN'T going to spin it? It's the hottest song in the world!
[Image via Instagram.]