Taylor Swift and Jennifer Lopez performed "Jenny from the Block" together Saturday night during Swift's last Red tour concert in Los Angeles at the Staples Center, according to Just Jared on August 25.
Taylor Swift, who is known for bringing out surprise guests during concerts, introduced Jennifer Lopez Saturday night to join her for a duet of what Swift called her "hairbrush song" when she was a little girl.
The 23-year-old American singer and songwriter was finishing up her Red tour in Los Angeles Saturday night when she introduced Lopez onto the stage by first saying, "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?"
"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."
Surprising fans, 44-year-old Jennifer Lopez then appeared on stage wearing a fully sequined silver jumpsuit. The crowd cheered as Swift and Lopez began singing Lopez's 2002 hit "Jenny from the Block". Swift even attempted Lopez's "Jenny from the Block" dance routine.
Saturday night's surprise duet follows Friday night's concert in Los Angeles at the Staples Center where Swift introduced English singer-songwriter Ellie Goulding to join her on the stage. The "Fearless" singer also shared the Staples Center stage with another English singer-songwriter Cher Lloyd earlier in the week.