Belles, by Jen Calonita

Well written, enjoyable YA. Wrong-side-of the-tracks Isabelle's world is shattered when her Alzheimer's suffering grandmother is deemed no longer capable to care for her, and she is sent to live with wealthy relatives she has never known. Pampered Mirabelle, nearly the same age, is supposed to help Isabelle fit into this new world of prep schools and country clubs, but Mira's friends are mean girls. Solid characterizations and believable personal growth lifted this out of standard chick-lit, despite the misleading cover, which I hope changes before it's April pub date. I really liked this.