Katy Perry plans to open up about her feud with Taylor Swift.

Katy Perry

Katy Perry

The 'Dark Horse' hitmaker, who is reportedly planning to take aim at her 24-year-old rival at the Super Bowl on Sunday (01.02.15) with her new song 'She's So Creepy,' admits she won't hold back when it comes to defending herself.

Asked about the tension between her and the 'Blank Space' singer, she told Billboard.com: "If somebody is trying to defame my character, you're going to hear about it."

The duo reportedly fell out last year when Taylor revealed one of her latest tracks 'Bad Blood' was written about another famous singer, calling her a "straight-up enemy."

She also claimed the person "did something so horrible" to her and tried to "sabotage [Swift's] entire arena tour," by allegedly stealing her dancers.

While Taylor didn't name Katy, the 'Roar' hitmaker fuelled rumours the comments were about her when she tweeted the next day: "Watch out for the Regina George in sheep's clothing," referencing a character from the film 'Mean Girls'.

A source later said: "Katy knows Taylor's song is about her, which is why she tweeted that."

Katy's ex-boyfriend Diplo also recently got involved in their feud and suggested the 'Shake It Off' hitmaker is "very strategic with her friends."

When asked to explain what he meant, he added: "I can't divulge, but I know a lot of stuff about her and I'm scared. I'm scared for my life."

Katy recently rekindled her on-again, off-again relationship with John Mayer, who briefly dated Taylor in 2009.

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