Olivia, the main character, undergoes four costume changes throughout the film to depict flashbacks from different periods of her school life. She wears her school uniform, PE uniform from lower school, and casual clothes depicting younger ages. Peter, her co-actor, only has one costume - a stereotypical flamboyant outfit to portray his role as a homosexual. Costumes aim to look realistic while advancing the narrative and emphasizing characters' roles and maturity levels. Makeup is kept natural to maintain realism within a school setting.