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Taylor Swift, Carly Simon share 'You're So Vain' duet Published: July 30, 2013

Taylor Swift welcomed guest Carly Simon on stage to sing the latter's 1973 hit "You're So Vain" to a stadium of concertgoers in Massachusetts, reports the Los Angeles Times.

On Saturday, clad in red shorts and a striped top, Swift treated her fans to a duet during the Foxborough, Mass., stop of her Red Tour.

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