The crossword solution for the term 'Judy Blume Best Seller' is 'Wifey'. Judy Blume is a renowned American author who has written many best-selling books, including the novel 'Wifey'. The book follows the story of Sandy Pressman, a woman in her thirties who is struggling to find her identity and purpose in life. It is a humorous and thought-provoking exploration of marriage, family, and self-discovery.