Taylor Swift surprised fans during the second show of her Eras Tour in London by bringing out Hayley Williams from Paramore for a duet.

Published by Cel Manero from Global One Media, Inc.

Swift also debuted her song “thanK you aIMee” for the first time and followed it by performing “Castles Crumbling” with Williams.

Taylor Swift continues to delight Swifties with her unexpected performances!

During the second Eras Tour show in London on Saturday, June 22, the 14-time Grammy winner surprised the audience by inviting Hayley Williams from Paramore on stage. Together, Swift, 34, and Williams, 35, performed “Castles Crumbling,” a vault track from Swift’s album Speak Now. Fans inside Wembley Stadium captured the acoustic ballad on video as part of the tour’s surprise songs segment.

They have been friends since the early days of their careers and previously shared the stage together in London back in 2011 during Swift’s Speak Now Tour.

Before Williams joined her on stage, Swift tantalized the audience with hints of a special guest appearance, keeping fans eagerly anticipating the surprise.

“In the process of re-recording, I really wanted to collaborate with artists whom I’ve been a fan of, or who have influenced my music and songwriting, especially on Speak Now,” Swift teased, reflecting on her approach to the re-recording project.

Swift continued her revelations to the London audience: “I reached out to an artist whom I’ve admired so much and asked her to join me on a song, and she graciously agreed. London, we’re incredibly fortunate because when I invited Hayley Williams to this show, she accepted.”

During Saturday’s performance, Swift also debuted “thanK you aIMee,” a track from The Tortured Poets Department, and creatively mashed it up with “Mean” from Speak Now. In a playful twist, Swift modified the lyrics of “Mean” to fit the moment, singing, “Someday, I’ll be singing this song in Wembley,” capturing the spirit of the memorable evening.

On June 21, Taylor Swift’s boyfriend, Chiefs tight end Travis Kelce, was seen in a VIP tent at her show in London, accompanied by his brother Jason and Jason’s wife Kylie Kelce. This was the first time Jason and Kylie were spotted at one of Swift’s concerts. The trio returned for the second night of shows in London.

Prior to her London performances, Swift played for a sold-out audience in Cardiff, Wales. She expressed gratitude to her fans for their enthusiastic support on her Instagram.

“Cardiff!! My first time playing in Wales and that was truly out of control in the best way – looking out into that massive, bouncing, dancing sea of people,” the performer wrote. “I’ll never forget it. I’m absolutely living for these UK crowds.”

On June 13, Swift celebrated her 100th show in Liverpool, England, and marked the occasion by announcing the end date of the tour.

In fan-captured footage from the show, Swift is seen addressing the Liverpool crowd, saying, “Many of you are wondering, ‘How are you going to celebrate the 100th show?'”

“The celebration of the 100th show, for me, means this is the very first time I’ve acknowledged to myself and admitted that this tour is going to end in December,” she revealed. “That feels so far away from now, but then again, it feels like we just played our first show on this tour because you have made this so fun for us.”

She continued, “It’s taken over everything. I think I once had hobbies, but I don’t know what they were anymore because all I do when I’m not on stage is sit at home and try to think of clever acoustic song mashups.”

After her third show in London on June 23, Swift will travel to Ireland the following weekend. She is scheduled to return to Wembley Stadium on August 15 for five additional show dates.