In a spectacular moment during her 2013 Los Angeles concert, Taylor Swift took her fans on a nostalgic journey back to her days of singing into a hairbrush.

She set the stage for a massive surprise by recalling how she used to belt out her favorite tunes as a child. Taylor announced, “This is my hairbrush song,” which led to an unexpected twist that thrilled the audience: the appearance of R&B icon Jennifer Lopez.

The duo performed Jennifer Lopez’s hit “Jenny From The Block,” to the delight of the crowd who sang along energetically and captured every moment on their phones.

The performance was a hit both live and online, with the video uploaded to Taylor’s YouTube channel amassing over 12 million views. Fans worldwide reveled in seeing Taylor and Jennifer enjoying themselves during this memorable collaboration.

Although this duet was widely shared, it was just one of many surprise guest performances during Taylor’s ‘The Red Tour’ in 2013. She brought several top artists like Ellie Goulding, Nelly, Ed Sheeran, and Patrick Stump from Fall Out Boy to the stage, each adding a unique flair to her concerts.