However, Katy has always remained pretty ~cryptic~ about the fallout. When Taylor implied "Bad Blood" was about Katy, Katy simply responded with this tweet.
In fact, Katy has never straight-up addressed the "Bad Blood" saga – and the closest we came to a confirmation that the drama was about Katy was when Calvin Harris tweeted this during a meltdown about Taylor.
And when Kim Kardashian released those now-infamous Snapchats, Katy's apparent response was also low-key.
However, last night Katy Perry attended Kanye West's LA concert. Of course, he played "Famous."
The song opens with the lyrics that ignited the fued between Taylor and Kimye: "I feel like me and Taylor might still have sex / Why? / I made that bitch famous."
And it seems Katy used the opportunity to be more direct with her shade. She Snapchatted herself pulling faces as Kanye rapped the famous lines.
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It's not the first time "Famous" has been used to shade Taylor after SnapchatGate – Kim also snapped herself looking pretty smug as the song played during a night out.