My Ultimate Sister Disaster — Jane Mendle

What happens when your sister becomes your biggest rival?

If there were a way to pick your family, fourteen-year old Franny might not pick her own. Her father is a hipster boutique owner who's constantly friending her on Facebook, her mother is off in Kenya jumpstarting her stalled anthropology career, and her sister Zooey, eleven months older and eight inches taller, is a precocious, prima ballerina. Lately, Zooey's so absorbed with her burgeoning ballet career that she barely seems to notice Franny. And since Zooey attends a top ballet conservatory, Franny's on her own navigating the brutal halls of her Manhattan prep school, a first-year trying to get noticed on the school paper (and by its soulful, long-lashed editor-in-chief).

But everything changes when Zooey breaks her leg and her dancing comes to grinding halt. Her ballet dreams shattered, Zooey begins to hone in on Franny's normal life and friends. Franny feels terrible for Zooey, but when her encroachment starts to extend to Franny's long-time crush, Franny begins to wonder if her sister might just be her worst competition...