Katy is one of the new judges on the present series of "American Idol", with the audition stage now airing in the USA on Sunday nights.
The feud - which has included Bad Blood, a Nicki Minaj altercation and a number of sly Twitter exchanges - has lingered on in the years since, and, despite Perry claiming she'd "forgiven" Swift last summer, she also released Swish Swish - which many fans saw as a diss track aimed at Swift.
Katy Perry found herself addressing her seeming feud with Taylor Swift yet again during Sunday night's episode of American Idol after a contestant confessed that his musical idol was not Perry, but Swift.
While filming the new season of American Idol, judge Luke Bryan asked one of the show's contestants if there was anyone he looked up to as a musician. "I love her as a songwriter as well".
"I'm sorry for this, Katy", he said. "I love her as a songwriter as.as well". But when Perry said over the phone, "Hi".
Katy Perry has been feuding with Taylor Swift since 2013.
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The contestant then awkwardly chose to apologize to Perry for admitting to be inspired by Swift. Perry maintained that Swift knew the dancers had already planned to work for Perry when her tour was scheduled to start.
"I think personally that women together - not divided and none of this petty bulls*** - women together will heal the world".
"I was like, 'Oh, we're just straight-up enemies.' And it wasn't even about a guy!"
When Perry's album Witness dropped in June 2017 Swift re-added all of her discographies to streaming services which fans think was a calculated move to hurt Perry's streaming numbers.
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