09/20/2012 11:09 am ET

Demi Lovato Reveals Bullying Story: 'I Had A Really Tough Time In Middle School'

Demi Lovato has a secret to share: Growing up wasn't always easy for her. Lovato has made it to the "other side," and is now drawing on her painful experiences as the new ambassador for Secret's "Mean Stinks" campaign.

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