Taylor Swift dances to ex Calvin Harris' song as she 'jokes around on Tinder' with Martha Hunt

Taylor Swift knows what she's doing. On Friday night as the Tommy Hilfiger show came to an end, the star shared a video of her dancing around to her ex Calvin Harris' hit song. The song, This Is What You Came For, was a bone of contention between the former couple this summer when it was revealed that the pair worked on the track together although Taylor used a pseudonym. But Taylor is clearly over it, as she danced in the front row with pal Martha Hunt as they supported model Gigi Hadid at the New York Fashion Week show.