As a child, actress Danica McKellar played Winnie on the TV show The Wonder Years. Later, she made many appearances on The West Wing. But she's also a mathematician who recently proved her own theorem. Danica is the New York Times bestselling author of several not so stuffy math books and she knows what it takes to market the books she writes! Listen to what she has to say about why she demands to work with me for all her professional photography!
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