"Fancy Nancy: Nancy Clancy, Secret Admirer" by Jane O'Connor is a 2013 hardcover book from the Nancy Clancy series published by HarperCollins. This juvenile fiction book explores themes of holidays, Valentine's Day, dating and relationships, and social themes. With a focus on the character Nancy Clancy, the story also touches on concepts of words and clothing and dress, making it a fun and engaging read for young readers. The book, with 128 pages, is written in English and illustrated by Robin Preiss Glasser, making it a delightful addition to any young girl's collection.