The Disreputable History of Frankie Landau-Banks by E. Lockhart
Frankie Landau-Banks attends the same elite boarding school - Alabaster Academy - as her popular older sister Zada and her secret society member father, leaving her with big shoes to fill on campus. Freshman year goes by without Frankie being noticed much, but returning for sophomore year is a different story after a summer of filling out. Frankie begins dating the co-president of the secret society - The Royal Order of the Bassett Hounds, and ties to infiltrate the male only group by outsmarting them and out pranking them.
Frankie is a great modern-feminist role model. She is smart and beautiful but also cunning, brave, and witty. I really like Lockhart's books and will continue reading her work.