Call off the cat fight!
"I think that it's really good that she disagreed with me," continued DioGuardi. "I think that it's important that people have different opinions or else who wants to watch the show? It'd be boring."
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The songwriter-producer, who has worked with Perry, 25, added, "It's Katy. I've known Katy for a long time."
Still, her family wasn't so convinced the sparring was in good fun.
"My Italian cousins back home wrote me texts like, 'Does she need a smack down?' I was like, 'No. You've got to chill out,'" DioGuardi joked.
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