Taylor Swift has had such memorable collaborations with some of music's biggest stars like Zayn Malik, Kendrick Lamar and her ex John Mayer — but there are other stars that if the 1989 star decided to collaborate with, she would absolutely shock the world.
Just last week everyone's jaws were on the floor when she dropped a song for the Fifty Shades Darker soundtrack with her best friend Gigi Hadid's boyfriend and ex-
One Direction member, Zayn, so just imagine what would happen if she released a song with Justin Bieber?
Click through the gallery to see other people Taylor should work with to really be on top of the music world.
If frenemies Katy Perry and Taylor did a song together, the world might literally stop spinning.