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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.

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.

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."

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!"