If Mariah Carey is concerned about her sister's arrest over prostitution, she isn't showing it .The diva showed off her bum just a day after her estranged Hiv positive sister, Allison was arrested in New York by undercover police officers.During her arrest, she mentioned she was the sister of the famous musician .
Mariah's sister publicly begged for her help back to sort out medical bills in March 2016.
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