fans were stunned when a British music icon electrified the stage during the blowout . The US singer-songwriter had been dropping hints about something big in the works, and she didn't disappoint. To everyone's astonishment, none other than Florence + the Machine showed up at Wembley Stadium for a duet of their smash Florida from her album , driving the crowd into an absolute frenzy.

Social media went into meltdown with reactions. One fan was so overwhelmed they posted: "Screaming crying." Another couldn't contain their excitement: "This is insane.

" While another was positively baffled: "This is so insane like what is wrong with her???" It just added to the excitement of her ultimate UK gig, which was already a hit with the fans before Taylor took things to the next level. As Taylor introduced the surprise act, cheers nearly drowned her out, the audience buzzing with the revelation that the American sensation wasn't alone on stage. It wasn't long before video clips popped up online, showcasing the powerhouse duo taking the evening's energy through the roof, fulfilling Taylor's vow to close her UK stint with a show-stopping performance.

Jack Antonoff also graced the stage as part of her farewell to the iconic venue. In the lead-up to the Wembley spectacular, the pop legend also took time to meet with families affected by last month's horrific knife attack at a Taylor Swift-themed dance event in Southport's Hart Space. It's understood that before her first UK Eras Tour performa.