Genie in a Bottle is the ninth book in Sarah Mlynowski’s Whatever After series.

Abby and Jonah on the story of Aladdin! They’re excited to be in a world of magic carpets and genies…but granting three wishes isn’t so easy, and hijinks and hijinks are coming soon!
Abby and her little brother, Jonah, have a magic mirror in their basement that transports them to different fairy tales, which they always mess up with. But sometimes it’s better: Snow White doesn’t eat apples; Cinderella gets a job she loves.