A Timeline of Taylor Swift and Katy Perry's Feud, From Beginning to End

Swift begins the tour for her 2012 album, "Red." Included in the tour's dancers are Lockhart Brownlie, Leah Adler, and Scott Myrick, who all toured with Perry on her California Dreams tour in 2011. At the end of 2012, they auditioned for and booked a spot with Swift. This became the root of the feud.

This is where things really heated up: six months into Swift's tour, the three aforementioned dancers were asked to join Perry again for her Prismatic World Tour. They all agreed and left the "Red" Tour in the middle of its run. In an interview with The Examiner, which hit the web in December 2013, Lockhart spoke about this decision like it was no big deal: "It was a great experience and [Taylor]'s a great person to work with, but then Katy contacted us. Obviously we were with Katy for two and a half years, she's like family to us, so we were, like, 'Absolutely.' We weren't really dancing in Taylor's tour anyway so I had got a little bored and I really wanted to do a promo tour.'"

This all brings us to Swift's infamous Rolling Stone interview from September 2014. Swift talked about her new song "Bad Blood" and where the inspiration came from:

"For years, I was never sure if we were friends or not. She would come up to me at award shows and say something and walk away, and I would think, 'Are we friends, or did she just give me the harshest insult of my life?'" she said. "[Then last year] she did something so horrible. I was like, 'Oh, we're just straight-up enemies.' And it wasn't even about a guy! It had to do with business. She basically tried to sabotage an entire arena tour. She tried to hire a bunch of people out from under me. And I'm surprisingly non-confrontational — you would not believe how much I hate conflict. So now I have to avoid her. It's awkward, and I don't like it."

Considering everything there is out there about the tour drama, this would have to be about Perry. Plus, as the quotes allude to, we'd seen them at plenty of award shows. Swift talked a bit about a personal element in the piece as well. The article reads, "(Pressed, Swift admits there might have been a personal element to the conflict. 'But I don't think there would be any personal problem if she weren't 'competitive,' she says.)." While it still seems to be about business, there's a hint of a moment in there where you could see how it might be about Mayer, too.

In an interview with The Telegraph, Swift said she was basically done talking about "Bad Blood," in so many words: "I'm not giving them anything to write about. . . . I'm never going to talk about her in my interview. It's not going to happen."

Aside from the fact that Swift recruited tons of women in Hollywood to be on her "team," there are so many possible Perry references in the "Bad Blood" video.

Swift had a Twitter exchange with Nicki Minaj about the MTV VMAs in July 2015. Minaj called out issues within the music industry after the "Anaconda" music video didn't make the nominations for best video. Swift took Minaj's comments personally, tweeting to the rapper, "I've done nothing but love and support you. It's unlike you to pit women against each other." Minaj quickly replied to clarify her comments, telling Swift it wasn't about her. The next day, Perry weighed in on the conversation, making a pretty clear reference to Swift's tweet when she said, "Finding it ironic to parade the pit against other women argument about as one unmeasurably capitalizes on the takedown of a woman. . . ."

Just ahead of the 2016 Grammys, Perry decided to throw a preparty that was meant only for creators. "You have to be a creator," she told The New York Times. "It's artists, producers and songwriters." Perry also confirmed that Swift was invited and that it was just up to her schedule whether she could make it. Swift did not attend.

Swift's team announced that she would be returning her extensive music back catalog to streaming services, including Spotify, at midnight on June 9, 2017, the same time as Perry's "Witness" was set to drop. She had previously kept her discography off of most streaming services to protest the business model. Swift didn't mention Perry in her decision, but the timing was interesting.

In an interview with Thrive Global's Arianna Huffington, the "Swish Swish" singer said she was finally ready to put their feud to rest. "I am ready to let it go," she said during a podcast interview. "I forgive her and I'm sorry for anything I ever did, and I hope the same from her. I think it's actually like, I think it's time. There are bigger fish to fry, and there are real problems in the world. You know what I'm saying?"

"I love her, and I want the best for her," Perry continued. "And I think she's a fantastic songwriter, and I think that if we, both her and I, can be representatives of strong women that come together despite their differences, I think the whole world is going to go like, 'Yeah, well we can do this.' I don't know. Maybe I don't agree with everything she does and she doesn't agree with everything I do, but I just really, truly want to come together in a place of love and forgiveness and understanding and compassion."

"There's a lot of other things out there in the world that people need to be focused on. God bless her on her journey. God bless her. Honestly," she said.

After wiping her social media clean, Swift dropped her single "Look What You Made Me Do." While the song is believed to be about her feud with Kanye West, the music video also had subtle references to her feud with Perry.

On Instagram, Perry commented, "I ship," under a Vogue post about Swift and her new boyfriend, Travis Kelce.