Taylor Swift just finished the European leg of her record-breaking Eras Tour , and she truly went out with a bang. The hitmaker delighted fans with two epic surprise performances for her final show at London's Wembley Stadium, where she's played eight sold-out nights this summer. During her show, Swift shocked fans when she switched up her setlist to include a song she'd never performed before.

She wasn't alone either. The singer invited Florence and The Machine to join her onstage to play their song 'Florida!!!' in an Eras Tour first. A full musical number followed, complete with choreography and costumes.

The surprise duet stunned fans for more than one reason. While most fans thought Swift would wait to perform the song across the pond, they were also stunned by the timing of the British star's appearance. More often than not, Swift saves any guests for the surprise song section of her show, but once more she had another trick up her sleeve.

When her surprise songs rolled around, the artist shocked fans by welcoming another one of her friends onstage to perform with her. During her guitar number, singer-songwriter Jack Antonoff joined Swift for a mash-up of 'Death by a Thousand Cuts' and 'Getaway Car', two of the biggest hits the friends have created together. Paying homage to the part Antonoff played in bringing Swift's music to life, they even re-enacted the moment they came up with the song's bridge, pausing their performance to recreate the now-viral moment.

Predictabl.