Friend to Foe:Evolution of the Feud Between Katy Perry and Taylor Swift

It's been three years since Taylor Swift released “Bad Blood,” the song that revealed her feud with Katy Perry. Now as Taylor begins promoting her new album Reputation, more details about their feud have been circulating. So how did their “mad love” turn into “bad blood”?

September 2008: First official photo

Katy and Taylor are photographed together on the red carpet at the MTV Video Music Awards. And there was a very different Miley Cyrus by their side.

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