And it's about time, since he's been practising his best "Shake It Off" dance moves for weeks.
The pair got up on stage with Jimmy Fallon at the SNL 40th anniversary after party and performed "Shake It Off." Taylor posted this video of the performance on Instagram and it's amazing.
However, it should be noted that in true Taylor fashion, her first attempt at sharing the video failed after she couldn't figure out how to rotate the video.