Taylor Swift & Charli XCX Team Up for 'Boom Clap' Duet in Toronto - Watch Now!

Taylor Swift and Charli XCX throw their hands up in the air while performing together at the 1989 World Tour show at Rogers Center on Saturday evening (October 3) in Toronto, Canada.

The 25-year-old entertainer surprised the crowd with the 23-year-old British singer to sing her hit track “Boom Clap.” Watch their duet below!

Taylor later wrote on Instagram, “@charli_xcx was incredible tonight in Toronto #boomclap #1989tourtoronto”

“thanks for having me tonight @taylorswift PS. My tour manager has the biggest crush on u ;) cc: @wilkiewilkinson Also, shout out @colbymakeup and @nettyjordan for glamming me up,” Charli captioned a backstage Instagram photo, which you can see below.