Taylor Swift has delivered countless surprise moments during her tours, but one appearance left fans completely stunned before a single note was even sung. As the mystery guest walked onto the stage, confusion quickly turned into excitement when thousands realized exactly who they were looking at — and what song was about to happen next.

Taylor Swift and Lisa Kudrow created an unforgettable moment when they performed together on stage in Los Angeles during Swift’s 1989 World Tour in 2015. Swift, known for surprising her audience with guest appearances, invited Kudrow to sing “Smelly Cat,” a song made famous by Kudrow’s character, Phoebe Buffay, on the hit TV show Friends. … Read more