Miley Cyrus has signed a deal to write a memoir scheduled to be published in spring 2009 by the Disney Book Group. The book will reportedly focus largely on the guidance of Cyrus' mother, Leticia, and will include previously-unseen photos and family stories. "I am so excited to let fans in on how important my relationship with my family is to me," Cyrus said in a statement issued Tuesday (April 22). "I hope to motivate mothers and daughters to build lifetimes of memories together and inspire kids around the world to live their dreams." The book will be published under the Disney-Hyperion Books imprint. Cyrus and her father, Billy Ray Cyrus, are currently working on a feature film.