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
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Demi Lovato reveals secret half-sister
Demi Lovato Gets Candid About Why She's Opening Up About Her Dark Past With Drugs; Hopes to Teach Her Little Sister - In Touch Weekly
Demi Lovato reveals secret half-sister: 'I never knew my whole life!
Demi Lovato Says She's in 'Chill' Mode with Wedding Planning: 'I'm Just Really Looking Forward to It' (Exclusive)