Taylor Swift has been surprising audiences on her Red tour with special guests, but it was the mother of all surprises when she brought Jennifer Lopez out to the stage for a duet.

Swift and Lopez performed Lopez’s hit “Jenny From the Block” at the Staples Center in Los Angeles on Saturday night, hitting the stage in sequin outfits.
Before introducing Lopez, Swift told the crowd, “I don't know about you but when I was a little girl... you know how you have your favorite song that you just play over and over again?” Daily Mail reports. “You just blast it in your room and sing in front of your mirror into a hairbrush. You had that one favorite song that was your favorite to dance to. Los Angeles, this is my hairbrush song.”

While Swift stuck to sequin shorts to spice up her outfit, Lopez opted for a head-to-toe silver sequin look, wearing a jumpsuit and a baseball hat.

They both took to Twitter after the performance to write:

Swift then retweeted a fan’s post of their performance:

Other guests Swift has had on stage with her are Tegan and Sara, Sara Bareilles and Cher Lloyd.

image: YouTube screenshot