Bringing an iconic song to the younger generation, Taylor Swift and Carly Simon performed the 68-year-old's hit tune, "You're So Vain."

Wowing the eager audience, the pair took the stage together at Boston's Gillette Stadium on Saturday night (July 27) to duet on the 1972 hit.

Talking about how the song will relate to her audience, Taylor told MTV News before the performance, "Every girl out there will be thinking of someone when we're singing."

"Got to sing 'You're So Vain' with Carly Simon at Gillette Stadium tonight!!!!! Unreal. I could not possibly look up to her more," Swift excitedly tweeted.

Be sure to check out the performance in the player below!