The 'Wizards of Waverly Place' actress has optioned the novel of the same name by Jandy Nelson through her production company July Moon and will take on the lead role of Lennie Walker, a shy girl whose life is turned upside down when her beloved older sister dies.
According to the synopsis of the book on Amazon.com: "Lennie plays second clarinet in the school orchestra and has always happily been second fiddle to her charismatic older sister, Bailey. Then Bailey dies suddenly, and Lennie is left at sea without her anchor. Overcome by emotion, Lennie soon finds herself torn between two boys: Bailey's boyfriend, Toby, and Joe, the charming and musically gifted new boy in town. While Toby can't see her without seeing Bailey and Joe sees her only for herself, each offers Lennie something she desperately needs. But ultimately, it's up to Lennie to find her own way toward what she really needs - without Bailey."
Selena filmed her final episodes of Disney TV show 'Wizards of Waverly Place' last year and has previously revealed she wants to focus on movies for the immediate future.
She said: "My TV show filmed its last episode last year so I would love to do a little bit more film work because I haven't done that much of it so far so I think that's the direction I want to go in next."