Taylor Swift absolutely loves surprising her fans! Bringing out stars from Lorde to MKTO, the 1989 Tour has been totally star studded. And of course, for T.Swift's last LA performance, she outdid herself and brought out the legend, Justin Timberlake!
Taylor told her audience how hard it was to keep his appearance a secret. She said, "You have no idea. I don't even know where to start because anyone who knows me knows this is my favorite artist."
She posted this awesome video of the duo rocking out on stage to Justin's hit song, "Mirrors."
What do you think about Taylor and Justin's collab on stage in LA? Let us know in the comments!