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Debbie Gibson.

Debbie - 16 Million

Tiffany- 14 million

But Tiffany had two number 1 hits in her debut album. Debbie had one. However, Debbie writes and produces her materials. She remains to this day, the youngest person ever to write, produce and sing a number one hit. She also managed to duplicate her success in a second album, before the backlash against bubblegum pop happened in the 90s.

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14y ago

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