The 21-year-old actress is said to have taken up writing and has been busy working on her debut book while on the set of her latest movie Snow White And The Huntsman.
Stewart has enlisted the help of her screenwriter mother Jules Stewart to help her find a publisher, according to Britain's Mail on Sunday.
A source tells the publication, "Kristen began by writing short stories. She has been working on her novel while filming and has almost finished it. She's desperate to be a published writer in her own right."