Taylor Swift was joined by her friend and supporting act Gracie Abrams during the third night of her six-show Eras Tour run at Toronto's Rogers Centre on Saturday, Nov. 16. The pair performed a surprise mashup of Swift's '1989' track 'Out of the Woods' and their collaboration 'Us' from Abrams' 'The Secret of Us' album.

Taylor Swift brought out her opening act Gracie Abrams to perform their Grammy-nominated song "Us" at her most recent Eras Tour stop in Toronto.

After traversing the globe for nearly a year and a half, Taylor Swift is nearing the end of her Eras concert tour. During the tour's international run, Swift also released a new album, "The Tortured Poets Department," which earned her six Grammy Award nominations, and attended 18 Kansas City Chiefs games to cheer on her boyfriend, Travis Kelce.