Mariah Carey during Mariah Carey "Rainbow" Album Signing at HMV at HMV Store in New York City, New York, United States. Mariah Carey's Rainbow album recently turned 25 years old, and now it's back on ...

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Mariah Carey is one of the bestselling artists of all time, with a staggering 19 Number One hits on the Billboard Hot 100, holding the record as the solo artist with the most chart-toppers in history.