Looks like Taylor Swift is getting ready for her The Eras Tour with a little stage time. Unsuspecting fans at The 1975‘s concert in London on Thursday (Jan. 12) were beyond surprised when Swift took the stage at the O2 arena to not only perform one of the rock band’s classic tracks, but also to live-debut her latest hit single.
In fan-captured video, Swift is seen emerging onstage in a sparkling silver dress, taking in the screaming crowd of fans. In other moments, the singer takes a shot covering The 1975’s “The City” — a fan-favorite track from the band’s self-titled first album — with the help of…