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[Image via Bauer Griffin Online.]
"When I heard You're So Vain, I just thought 'That is the best song that has ever been written.'
That's the most direct way anyone has ever addressed a breakup."
So that is Taylor's best song ever? Ooh, take that, Harry Styles and One Direction!
Ch-ch-check out the video (above) to hear more about how the duet went down- and to see more of the amazing performance!