Watch out, Miley, it looks as if at least one other pop superstar isn't digging your new grown-up look. While backstage at the MuchMusic Awards in Toronto on June 20, Katy Perry caught a glimpse on TV of some of Miley's new outfits and, to put it lightly, was not a fan. "She looked to her friend and said, 'Oh my God, poor girl," dishes our Canadian spy.

And Katy's scathing critique didn't stop there: She had some scary predictions for the Disney star. "Katy said, 'She's Britney Spears all over again. It's happening right before our eyes,'" says our spy. When her friend asked if she meant Lindsay Lohan, not Britney, Katy was ready with this zinger: "No, she's definitely headed the Britney route. It's worse. Look at those outfits. It's bad." Is this the start of another epic catfight? We have our fingers crossed, of course.

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