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Taylor Swift And Charli XCX Performed 'Boom Clap' Together And It Was Perfect

Taylor and Charli turned "Boom Clap" into a duet during her Toronto tour stop.

As Taylor Swift's 1989 World tour continues to make a mark in cities across the country, so, too, does her parade of celebrity pals. For her Toronto show Saturday night, Swift brought an extra dose of pop star glamour when Charli XCX joined her onstage. The two performed a rendition of Charli's "Boom Clap" and based on Taylor and Charli's enthusiasm, it was a great time for both of them.

Taylor said that Charli was "incredible" and told her that she loved her while Charli said that "it was fuuuun" and complimented Taylor's "cute" outfits.

Taylor has numerous live shows left in her 1989 World tour. Who do you think she'll bring out next?