Katy Perry has hurled a foul-mouthed tirade on a former heroine who treated her badly when she first arrived in LA hungry for fame and music success.
The I Kissed A Girl singer will not name names, but she wants the target of her Rolling Sone magazine rant reads the piece and realises what a terrible person she was.
Perry tells the magazine: "I remember coming to L.A. for the first time and meeting Gwen Stefani and how gracious and wonderful she was, and then meeting another favourite artist of mine and what a c**t she was.
"It ruined my dreams of that person, the c**t, and I will always be a fan of the person who was gracious."
It also reminded the star how important it is t be gracious and polite when meeting fans, no matter how she's feeling.
Who knew she had it in her?
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