When rumor becomes fact: Lionsgate has announced that Jennifer Lopez will join Cameron Diaz in the studio's big screen adaptation of the nonfiction pregnancy guide What to Expect When You're Expecting. Lopez is set to play "a woman who adopts a baby from abroad with her husband after difficulty conceiving." This is a bold casting choice considering how well Lopez's last conception-related project The Back-up Plan fared at the box office. Regardless, look for this one to hit theaters Mother's Day weekend next year. [Deadline]