Honey, I'm the Real Queen

Tina Anderson spends months passing herself off as Alicia at Kenway Academy, wearing clothes and accessories stolen from Alicia's own house and using the borrowed status to push Alicia to the bottom of the social order. She spreads rumors about her, humiliates her in front of classmates, and treats the theft as an achievement. Alicia is actually the billionaire heiress the school gossips about, enrolled under the name "Alicia Scott" so she can live as an ordinary student. Her father knows where she is and what she's doing. Her fiancé Liam is aware of her real identity and stays close to her through the term, backing her when Tina's schemes escalate. At the prom, Tina drugs Alicia and has her taken from the venue, planning to finish her off socially while she's gone. Alicia gets free before the plan runs its course and comes back to the dance to lay out what Tina has been doing, including the stolen items and the impersonation. Her father arrives and confirms her identity in front of the whole school. Tina is arrested that night. Three years pass. Liam comes back from Europe to collect Alicia for the start of college, and the two of them leave together for the next stage of her life.