LONDON — Sophie Kinsella, the best-selling author behind the “Shopaholic” book series, has died at age 55.The writer, whose real name was Madeleine Sophie Wickham, was diagnosed with an aggressiveLONDON — Sophie Kinsella, the best-selling author behind the “Shopaholic” book series, has died at age 55.The writer, whose real name was Madeleine Sophie Wickham, was diagnosed with an aggressive


