Demi Lovato reveals sister: Singer never knew she had a secret half-sibling

quot;X Factor" judge Demi Lovato just found out she had an older half-sister.

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Demi Lovato Reveals She Has a Secret Sister!

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Demi Lovato Reveals a Secret Sister

Demi Lovato reveals secret half-sister

Demi Lovato: I Just Met My Half Sister!