From prom queen to punk rock!

Erika Van Pelt shocked fans when she debuted a drastic new look on Americal Idol's top 10 night Wednesday.

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The 26-year-old took the advice of the show's new in-house stylist Tommy Hilfiger by chopping off her shoulder-length blonde hair and dyeing it black. The result: a Kris Jenner-esque 'do.

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Between her edgy hair and all-black ensemble, Van Pelt was unrecognizable when she took the stage to perform Billy Joel's  "New York State of Mind."

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Jennifer Lopez loved the contestant's "Pat Benatar vibe" and Randy Jackson said she looked "hawt!" Ryan Seacrest even raved, "Not since the Sanjaya ponyhawk have we seen such a transformation with hair!"

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