July 27, 2013 - As a surprise special guest, Carly Simon joined Taylor Swift on stage tonight to sing You're So Vain together. It was the second night of Swift's sold-out Red Tour at the Gillette Stadium in Foxborough, MA. For Simon, who only occasionally appears live in concert, performing before a crowd of 55,000 was a momentous occasion. Backstage footage and interviews with Carly and Taylor. iTunes: Connect with Carly:
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