Which 16-book novel series created by Deborah Gregory in 1999 was adapted both to a film and then a television series in 2003?
The Cheetah Girls (novel series): The Cheetah Girls is a 16-book novel series created and written by Deborah Gregory. The Cheetah Girls (novel series):  The series, which began in 1999, is about a female vocal group seeking success and fortune.
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