Pop stars Taylor Swift and Katy Perry have officially ended their feud. Now, MailOnline has taken a look back at their fallout, from 'stealing' back-up dancers to subtle digs and diss tracks. The pop stars have been crossing paths for many years, and the pair even seemed to be friends for a while, gladly posing for photos together. But the singers were embroiled in a feud since Taylor claimed the Bon Appetit singer stole three of her backing dancers from her Red tour in 2012. Better times: Perry and Swift were friendly prior to a dispute over a dancer who left Swift's tour for Perry's Where it all began: The singers were been embroiled in the clash since Taylor claimed the Bon Appetit singer stole three of her backing dancers from her Red tour in 2012 (pictured 2013) SEPTEMBER 2014 TMZ reports that the feud between the performers ignited when three of Taylor's dancers quit to join Katy's Prismatic World Tour. Taylor releases the single Bad Blood, which was believed to be about her bitter fallout with Katy. Added fuel to the fire, in a now infamous interview with Rolling Stone Taylor admits that the track was about a female musician - and 'straight-up enemy.' She tells the publication: 'For years, I was never sure if we were friends or not. 'She would come up to me at awards 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?" 'Then last year, the other star crossed a line. 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.' After Taylor's interview is published, Katy tweets with a possible slant in Swift's direction: 'Watch out for the Regina George in sheep's clothing,' referring to Rachel McAdams' bitchy character in Mean Girls. Rivalry: The unlikely feud was thrust into the spotlight in 2014 when many had speculated that Taylor's hit song Bad Blood was about Katy Foe: Swift, seen in 2016, lashed out at Perry with her song Bad Blood Ouch: In September of 2014, Taylor added fuel to the fire when she said in a now infamous interview with Rolling Stone that the track was about a 'straight-up enemy' SEPTEMBER 2016 Katy reveals she would consider working with Taylor if her not-so-secret longtime nemesis apologies. When a fan on Twitter asked, 'will you collab with Taylor Swift?[sic],' without missing a beat, Katy responded: 'If she says sorry, sure!' MAY 2017 Katy seemingly retaliates to Taylor's Bad Blood track with single Swish Swish, which is also reportedly about their feud. There are plenty of references to Taylor all over the track: The most obvious one is that she calls her rival basketball team the Sheeps. The I Kissed a Girl hitmaker makes it clear she was not going to back down from their very public spat, singing: 'Ur game is tired, you should retire.' Lyrics include the lines, 'Don't lose no sleep/Don't need opinions/From a selfish or a sheep/Don't you come for me/No, not today/You're calculated I got your number.' In the track's music video, Nicki Minaj pops up (wearing what looks like a Bad Blood costume) to make it clear she is on Team Perry. Hitting out: Katy compounds her ongoing feud with Taylor, days after calling on the singer to settle a fallout sparked by a row over three backing dancers Speaking about her new single Swish Swish in relation to the fallout, Katy tells James Corden's Carpool Karaoke: 'That's true, there is a situation. Honestly, it's really like she started it and it's time for her to finish it.' Katy claims she 'tried to talk' to the blonde beauty about the feud some time ago, but claims she 'wouldn't speak' to her. 'She wouldn't speak to me. I do the right thing anytime that it feels like a fumble. It was a full shut-down and then she writes a song about me and I'm like 'OK, cool, cool, cool. That's how you wanna deal with it?'' The hitmaker admits that her single Swish Swish is a direct 'reaction' to Taylor's, as she says the star has to learn about 'the law of cause and effect'. JUNE 2017 Katy insists that her old friend should be first to apologise, and believes she was wrong to document their fallout so publicly. She tells NME: 'I wish that I could turn the other cheek every single time, but I’m also not a pushover, you know? Especially when someone tries to assassinate my character with little girls [her fans]. That’s so messed up!' Just weeks later, Katy announces she wants to finally end her three-year feud with pop rival Taylor Swift during her promotional 'Witness World Wide' livestream. 'I am ready to let it go! 'I forgive, I forgive, I forgive her and I'm sorry for anything I ever did, and I hope the same from her. 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? And I love her, and I want the best for her. And I think she's a fantastic songwriter,' Katie told Thrive Global Podcast's Arianna Huffington. Later that month, Katy's frenemy frustration is rehashed, yet again, when Taylor releases her entire back catalogue to all streaming services the same day as Katy's fifth studio album Witness. The 32-year-old Swish Swish songstress told Thrive Global Podcast's Arianna Huffington (L): 'I forgive her and I'm sorry for anything I ever did, and I hope the same from her' AUGUST 2017 Taylor seemingly takes aim at Katy again in her Look What You Made Me Do music video which was released in August 2017. The reputation hitmaker dons a blonde bob and crashes her car in the music video as she looks eerily similar to the Dark Horse songstress. MAY 2018 Ahead of Taylor's first Reputation World Tour concert in Phoenix, Arizona, the Firework singer sends her a hand written note as well as a symbolic olive branch. Taylor publishes the letter on Instagram, six years after they began a public pop feud over backing dancers. Katy's letter reads: 'Hey old friend, I've being doing some reflecting on our miscommunications and though feelings between us.' On posting the contents of an envelope sealed with a puppy dog sticker, Taylor makes it very clear who it was from, writing 'Thank you Katy' in red with pink hearts. There it is: The white note with black writing and a dog sticker on the back was from her arch enemy Katy Perry, who the blonde Look What You Made Me Do signer had been feuding with for a staggering six years Katy though is once again 'upset' at Taylor, for going public with the apology letter that suggests the Firework singer 'accepts sole responsibility' for their six year feud. 'Katy expected that Taylor would post something about it,' a friend told The Sun Online . 'But she didn't expect the actual letter to go on social,' says her friend. 'The thing is, you can only see part of what Katy wrote and it looks like she's taking sole responsibility for the entire feud. 'Without context, it looks like she's taking the blame for everything and obviously there's a lot more to it than that.' OCTOBER 2018 Katy confirms hints that feud with Taylor is over as she shows support for her political posts concerning LGBT rights. The Fireworks hitmaker was one of the first to 'like' the Delicate singer's Instagram post after she broke her silence on politics. Speaking to Variety on the amfAR Gala carpet, when asked why she supported the post, Katy responded: 'Because she's setting such a great example.' Yum: Katy posted the sweet snack with the caption 'feels good @taylorswift' and the location geotagged 'Let's Be Friends' Sweet: Taylor showed that the feeling is mutual as she commented the post with thirteen heart emojis MAY 2019 Taylor adds Katy's latest track Never Really Over to her ME! Apple Playlist, sparking further reconciliation speculation. JUNE 2019 Taylor sends Katy a plate of chocolate chip cookies with 'peace at last' written in red icing alongside peace symbols. Katy posts the sweet snack with the caption 'feels good @taylorswift' and the location geotagged 'Let's Be Friends.' Taylor shows that the feeling is mutual as she comments on the post with thirteen heart emojis. Taylor Swift and Katy Perry FINALLY put their feud to bed as they hug and make up in new video for LGBT anthem You Need To Calm Down Beef-free: Dressed as a burger and fries, Taylor Swift and Katy Perry FINALLY end their feud as they hug in the music video for LGBT anthem You Need To Calm DownAll rights reserved for this news site dailymail and under his responsibility