Then you're going to LIVE for this video!!!
She's gone undercover -- and she OWNS it!
Ch-ch-check out the video for Birthday here (above)!
You need Calvin Harris' new album in your life!
Not only does it feature some killer tunes, but most of them are epic collaborations with some of our favoritest artists - like this one with Ellie Goulding!
Check out Calvin & Ellie's I Need Your Love (above). You will be glad you did!