(AP) At an age when other teens are writing in their diaries, teen star Miley Cyrus is working on her memoir.

The multi-hyphenate teen star has signed a book deal to tell the story of her young life, it was announced Tuesday. The memoir by 15-year-old Cyrus, who stars in the Disney Channel series "Hannah Montana," is to be released in spring 2009.

Disney said the book will focus particularly on the guidance of Cyrus' mother, Leticia.

"I am so excited to let fans in on how important my relationship with my family is to me," Cyrus said in a statement. "I hope to motivate mothers and daughters to build lifetimes of memories together and inspire kids around the world to live their dreams.

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Photos: Kids' Choice Orange Carpet

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"The Disney Book Group will publish Cyrus' book internationally in a clear bit of synergy for the Walt Disney Co. Disney said the book will also feature previously unseen photos, family stories and "a look at her inner circle of loved ones."

The book, the first by the 15-year-old singer-actress, will be published under the Disney-Hyperion Books imprint. Financial details of the deal were not immediately known.

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