These Celebs Guest-Starred On Television Shows Before Their Big Break

Demi Lovato in "Grey's Anatomy"

Singer Demi Lovato played a girl with a bizarre neurological disorder that allowed her to hear every single noise inside of her body. She was misdiagnosed with paranoid schizophrenia, but thanks to McDreamy, she was able to get help and treatment for the correct problem.

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The More You Know

  • Megan Fox was banned from the Wal-Mart store in her hometown because she shoplifted makeup as a teenager. She claims it was an accident.
  • Kate Bosworth has two different-colored eyes.
  • Martha Stewart started out as a fashion model.
  • Kanye West used to work at the Gap.
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