he ' ' has definitely been an absolute success. At every concert and every show, she gives her fans her 100%. That's one reason her ' ' is shaping up to be truly historic in the music industry.

Swift is passionate about making every moment legendary, and in an epic city like , she didn't hold back. She even brought another incredible artist, to the stage as a special guest. The two have known each other for a long time, and they seized this opportunity to wow both fan bases with a surprise collaboration on Carpenter's song, .

" How did they make it happen? It all started when Swift asked the crowd for a phone to call her former Eras Tour opening act, . She told the audience to stay silent as she put Carpenter on speaker. When answered, Swift shared, " " Swift then playfully asked, " " Carpenter replied that she was somewhere where people were " " too.

" " Swift asked. Carpenter answered, "It would probably take me, like, five seconds," sending the crowd into a frenzy. The two singers then surprised fans with a mashup of Carpenter's "Espresso" and "Please, Please, Please" with Swift's "Is It Over Now?".

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