In 2009, rapper Kanye West, thought to be one of the targets of Swift's new single, leapt on stage to interrupt Swift's acceptance speech.
Then there's the whole 'The old Taylor can't come to the phone right now. Why?
A number of fans were majorly pissed at Katy for taking the lazy route, including Sydelko's Youtube co-star Elijah Daniel, who tweeted-and-deleted criticism of Katy's video.
Writing about Perry's album, The Ringer's Lindsay Zoladz made the astute point that Perry's underdog persona was always at odds with her huge popularity, but that Swift picking on her-lining up a dozen celebrity women against Perry under the guise of feminist power-had credibly positioned Perry as the thing she claimed to be all along. At first listen, I was like it's alright. Thank you @taylorswift13 it's awesome!
However, one less impressed person wrote: "Real Talk I don't like #LookWhatYouMadeMeDo lol. And I think she's a fantastic songwriter".
Another added that her "edgy rebrand" is "brinking on satire". That is why the official song lyrics to "Look What You Made Me Do" are needed.
The video will debut at Sunday's MTV Video Music Awards, which will be hosted by Perry, fueling speculation that the two may bury their long-running feud on stage.
Ever since 2013, the pop icons have been sniping at each other in interviews, over social media, and even in songs like Swift's "Bad Blood" and Perry's "Swish Swish".
An ongoing feud between Perry and Swift has been reported heavily in the news over the past several years.
Reputation is slated to release on November 10 but you can pre-order it on iTunes now, where "Look What You Made Me Do" is also for sale.
Perry's request to make amends with Swift comes just weeks after the singer released an alleged diss track against Swift titled "Swish, Swish".