The Complete Rosewood Chronicles Collection (Defekt) - Connie Glynn Penguin

Lottie Pumpkin is an ordinary girl who has spent her life longing for the extraordinary. Ellie Wolf is the crown princess of Maradova, who wants nothing more than a chance at an ordinary life. When fate puts Lottie and Ellie in the same dorm room at the prestigious Rosewood Hall, there's only one solution: for the girls to swap identities, and live the lives they've always dreamed of. But at Rosewood, a secret never stays secret for long. Someone in the school is on to them--and if the truth is revealed, the results may be more treacherous than they ever expected.