As a dermatologist, I have seen no birthmark on Cyrus' face. She does have a facial scar, however: http://www.skinema.com/Skinnies2008MileyCyrus.html
Selena's hair is Black.
Her birthmark is near her stomach.
Green
Marie
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Gianna
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MARIE
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Britney Spears
Selena Gomez weighs at 117 currently