Queen Bee (The Diamonds, #1)

"Lady Ela Dalvi knows the exact moment her life was forever changed--when her best friend, Poppy, betrayed her without qualm over a boy, the son of a duke. She was sent away in disgrace, her reputation ruined. Nearly three years later, eighteen-year-old Ela is consumed with bitterness and a desire for . . . revenge. Her enemy is quickly joining the crème de la crème of high society while she withers away in the English countryside. With an audacious plan to get even, Ela disguises herself as a mysterious heiress and infiltrates London's elite. But when Ela reunites with the only boy she's ever loved, she begins to question whether vengeance is still her greatest desire. In this complicated game of real-life chess, Ela must choose her next move: Finally bring down the queen or capture the king's heart?"--