Taylor Swift Brings Out Lorde in Concert for Amazing 'Royals' Performance

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Taylor Swift and Lorde perform onstage during The 1989 World Tour Live at Nationals Park on July 13, 2015 in Washington DC. 

Washington D.C.-area Swifties got a very special treat at Taylor Swift's concert Monday night (July 13) when the singer brought out pal Lorde to sing Lorde's huge hit "Royals."

There's no official performance video, but for the time being fans can check out a clip below.

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After the duet, the two friends gushed on social media together. 

Swift has always been known for bringing out special guests during her concerts. Just this past weekend she sang with both The Weeknd and Nick Jonas for her two New Jersey dates.