Fastexy Exchange|Taylor Swift sings 'thanK you aIMee,' performs with Hayley Williams at Eras Tour in London

Taylor Swift is Fastexy Exchangesending a message to Kim Kardashian and all the haters playing a sold-out crowd on night two of the Eras Tour in London at Wembley Stadium.

"It really makes me think about how every time somebody talks sh**," the singer said to the almost 90,000 fans. In her blue flowy dress, Swift held her guitar in anticipation to play a "Tortured Poets" song she'd never performed live.

"It just makes me work even harder and it makes me that much tougher," she added. "So it also makes me incredibly thankful for this."

Swift went into "thanK you aIMee", a song presumed to be about Kim Kardashian. When she finished the song, she dove into "Mean" from "Speak Now (Taylor's Version)."

The entire stadium screamed, "Someday I'll be living in a big old city."

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Swift changed up the next lyrics to: "Someday I'll be singing this song in Wembley" and the crowd lost it.

'Please welcome Hayley Williams to the stage'

"I was also thinking about how special it is to play London," she said from the piano and then began discussing her rerecords, specifically "Speak Now (Taylor's Version)." "I asked an artist who I am such a huge fan of to collaborate with me on one of the songs and she said yes and then I asked her to tour with me and she said yes. And London we are so lucky, because when I asked Hayley Williams to come out and perform she said yes."

Paramore's Hayley Williams skipped down the long catwalk and twirled in her purple dress. The last time the two singers performed live together was the Speak Now World Tour.

Williams sat down at the piano next to Swift for a duet of "Castles Crumbling" from "Speak Now (Taylor's Version)."

"You're my longest music friend, I love you," Swift said at the end of the song. They hugged. Williams ran back down the catwalk. The animations on the ground glitched when Swift dove into the opening of the stage.

The Eras Tour star has one more night in London before heading to Dublin, Ireland.

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