Demi Lovato Brought Out Brazilian Drag Queen Pabllo Vittar for “Cool for the Summer” at Rock in Rio: Watch

Demi Lovato took the Palco Mundo stage at Rock in Rio on Saturday delivering a career-spanning set that mixed material from her latest album, It’s Not That Deep, with some of the biggest songs from her back catalog. But she saved the night’s biggest surprise for last: Brazilian pop star…

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