WATCH Taylor Swift Perform With HAIM On Stage In London

Singer Taylor Swift and the Haim sisters are pretty close friends.

Fans already know "All Too Well" that Taylor has been spending a lot of time overseas with her "London Boy," Joe Alwyn, to who she is rumored to be engaged.

But it looks like the "Gorgeous" singer had a girl's night out as she performed a mash-up of "Love Story" and "Gasoline" with HAIM at the 02 Arena in London on July 21, 2022.

The "You Belong With Me" singer became a fourth Haim sister, which comprises sisters Este, Danielle, and Alana Haim. According to Pitchfork, the sisters have been wearing the same custom Louis Vuitton leather pants throughout their One More Haim Tour, and Swifties went nuts to see the "Bad Blood" singer wearing the same iconic leather pants as well.

Fans went crazy to see the group perform a mash-up of Fearless' "Love Story" and Women in Music Pt. III's "Gasoline."

In 2021, the "Delicate" singer had even lent her vocals to a new remix of "Gasoline." The version featuring the signature vocals of Taylor Swift can be heard in the video below.

Their first collaboration was on Taylor's ninth studio album, Evermore, released on December 11, 2020, through Republic Records. Evermore dropped less than five months after Taylor's eighth studio album, Folklore, a sister album to Taylor's latest record.

One of the tracks on Evermore is the popular "no body, no crime" which featured HAIM. Fans can give it a listen below.

HAIM's 2022 tour is scheduled to wrap up in San Diego, California, next week, while the "Delicate" singer will probably stay behind in London.

Although Taylor has yet to release 1989 (Taylor's Version), which many fans expect will be the next re-released album that she releases, fans did just get new music in the form of "Carolina," from the soundtrack of the movie Where the Crawdads Sing, which was released in theaters earlier this month. Fans can give the song a listen below.

If that wasn't enough, the "Cats" actress is heading back to the silver screen once again. Taylor Swift is appearing in the next David O. Russell film, "Amsterdam," alongside stars like Margot Robbie and Christian Bale.

One Taylor Swift fan site had the full scoop on Taylor's recent performance. When she got up on stage, Taylor addressed the crowd, saying, "I haven't been on stage for a long time. It's nice to be back."

Taylor hasn't performed a major tour in a while, but the Dallas performance during her Reputation tour is currently available to stream on Netflix.

Taylor looked to be absolutely commanding the stage as she wore a black bra, dark lipstick, and kept her blonde hair tied back in a braid behind her.

The fan page also shared a hilarious Taylor Swift TikTok video, where she is "hitting copypaste on your friends' looks." In the video, the Haim sisters are getting dressed before they turn around and stare at Taylor, who is getting dressed the exact same way.

Overall, it looks like it was a fun night for Taylor Swift, the Haim sisters, and all the fans out there! Now they just can't wait for the next collaboration... or 1989 (Taylor's Version)!