Credit: C Flanigan/FilmMagic

Hilary Duff is booked up!

The former Disney star, 22, has signed on to write a series of young adult novels for Simon & Schuster.

The first novel, titled Elixir, will feature the adventures of a globe-trotting photojournalist named Clea Raymond. It's due to hit bookshelves on Oct. 12.

This series isn't the only one she'll be working on. The star also plans to write a nonfiction book about children coping with divorce, scheduled for 2012. (Duff, whose own parents have split, has written about the topic in such songs as "Gypsy Woman" and "Stranger.")

Duff's new gig comes just weeks after confirmed that she got engaged to hockey player Mike Comrie, 29, who gave her a 14-carat, $1 million sparkler to seal the deal.