What's the Name of That Book??? discussion

This topic is about
Blue Moon
SOLVED: Children's/YA
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SOLVED. book that I read in the late 1990s. It was about a girl that discovered that a statue came to life every time there was a blue moon. [s]
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In the story I believe that he had a spell cast on him and could only stay a real person when he fell in love - kind of the same vein as Beauty and the Beast. I think the book cover was blue with a moon on it. Any help would be appreciated.