Taylor Swift Rocks Wembley with Surprise Guest Florence Welch and Emotional Ballad

Taylor Swift was joined by Florence Welch for a surprise performance during her final European Eras tour date. She also debuted a ballad believed to be about her breakup with Joe Alwyn. The London show followed the cancellation of Vienna dates due to a foiled attack, with fans facing tight security at Wembley Stadium.

Taylor Swift was joined by surprise guest Florence Welch for her first live performance of "Florida!!!" during the final European date of her Eras tour at Wembley Stadium on Tuesday. Welch, of Florence + the Machine, co-wrote and sang on the track from Swift's latest album, "The Tortured Poets Department."

Swift also debuted "So Long, London," a ballad fans believe is about her breakup with British actor Joe Alwyn. Fans had flocked to Wembley for Swift's fifth London show in August, following the cancellation of her Vienna dates due to a foiled planned attack. Many Viennese fans bought resale tickets at inflated prices to catch the London performance.

The show, part of Swift's record-setting billion-dollar-grossing Eras tour, features dedicated sections for all 11 of her studio albums. Fans arrived dressed in sequins, cowboy hats, and friendship bracelets, facing tight security measures at Wembley. Despite heightened security, police assured there were no related threats from the Vienna incident.

Tay-gating, the practice of gathering outside a Swift show without a ticket, was banned to control risks. Among the attendees were Marie Wright from Limerick, Ireland, who flew in with her daughter's friend after purchasing tickets last-minute. The tour resumes in the US in October and concludes in December in Vancouver, Canada.

(With inputs from agencies.)