Demi Lovato helps out the Victoria's Secret Angels' campaign in St. Barths

The 23-year-old is one busy lady, going from Jungle Ball tour to balmy beach fashion shoot in 48 hours.

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Demi Lovato working with Victoria's Secrets in St Barth - December 15th

Demi Lovato helps out the Victoria's Secret Angels' campaign in St. Barths

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The Secret of the Sand Castles, Book by Demi, Official Publisher Page

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The Secret of the Sand Castles, Book by Demi