Katy Perry dances to diss song written about her at ‘old friend’ Taylor Swift’s Eras Tour in Sydney

She’s shaking it off.

Katy Perry was spotted happily dancing to Taylor Swift’s diss song about her at the Eras Tour in Sydney, Australia, on Friday night.

The “California Gurls” singer gleefully bobbed her head while watching the concert from a VIP box as Swift belted out her 2014 hit “Bad Blood” onstage, according to videos on social media.

Swift performed her 2014 song “Bad Blood” as Perry grooved to the tune in the crowd. [SOURCE] for TAS Rights Management Swift and Perry reunited backstage and snapped a selfie together. katyperry/Instagram

Perry, who attended the show with her pal Rita Ora, later linked up with the “All Too Well” singer backstage and posted a photo of their reunion to her Instagram with the caption, “Got to see an old friend shine tonight.”

The song from Swift’s “1989” album was long-rumored to be about her beef with Perry.

Their feud unfolded when Swift, 34, claimed in a 2014 Rolling Stone interview that Perry, 39, had “basically tried to sabotage an entire arena tour” by stealing her backup dancers, leading fans to believe the pop tune was aimed at the “Last Friday Night” singer.

Perry cryptically responded to the dig at the time by tweeting, “Watch out for the Regina George in sheep’s clothing,” referring to the blond bully in the 2004 movie “Mean Girls.”

Swift and Perry became enemies in 2014. [SOURCE] for TAS Rights Management Swift claimed Perry tried to sabotage her tour that year. Danish Ravi/Zuma / SplashNews.com

While tensions between the pop stars remained high for some time, Swift and Perry ended up burying the hatchet in 2019.

The “Dark Horse” hitmaker claimed that year that she was the one to make the first move in righting their relationship.

“It kind of was a process. I sent her a literal olive branch and a note apologizing for my part in all of it when she started her ‘Reputation’ tour,” Perry said in an interview with Australian radio hosts Kyle and Jackie O.

Perry retaliated by comparing Swift to “Mean Girls” character Regina George. KATY PERRY / Instagram

“I just thought she was about to embark on something new and big and needed the support.”

The “American Idol” judge shared that she realized how much they had in common when she was wrapping up her “Witness” tour that year.

“Maybe there’s only five other people in the world that can have the same type of conversations and understand where we’re coming from and that we should celebrate our commonality and our friendship and be able to be there for each other,” she said.

Perry decided to make things right with Swift in 2019. WireImage

From there, the two musicians started chatting when they crossed paths at industry events like Oscar parties.

“I just went up to her, and I was like, ‘Hey, you know it’s been a long time, and I think we’ve grown up a little bit, and I just wanted to say I’m sorry and that I’m really here for you and I love you. I hope that we can be friends in the future,’” Perry recalled.

“We started talking a little bit and trusting each other because it’s about trusting, and she got my number, and we started texting.”

Perry apologized to the “Anti-Hero” singer with a note and in person. WireImage

Swift waved her white flag when she sweetly baked Perry some cookies.

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“She actually makes those cookies, and they are actually so delicious,” Perry said, adding, “I think that both her and I, we have influenced young people and especially young girls who are in this type of situation day in, day out at school … going through this similar type of thing.”

The two artists are now friends. WireImage “We got to be an example of redemption for young girls,” Perry said in 2020. katyperry/Instagram

In 2020, Perry reflected on making amends with Swift, telling Howard Stern how “grateful” she was for their ability to work past their differences.

“What I’m so grateful for is that we did get to make up, and we made up publicly, and we got to be an example of redemption for young girls,” she said.

While Perry and Swift had “problems,” it’s clear they were able to “solve ’em.”