Arianna is a 2015 independent coming-of-age drama film written and directed by Carlo Lavagna. It was entered into the competition at the Venice Days section at the 72nd Venice International Film Festival, and was awarded for Best Italian Discover and Best New Actress and won the best actress award at the Italian Golden Globes (Ondina Quadri).

Plot

Now considered a woman, Arianna (Ondina Quadri) has a social life and an academic life. There remains one thing missing from her life as a woman: her period. Constantly scrutinizing her sexual development, or lack thereof, is a daily task until the summertime when she meets Martino (Eduardo Valdarini). The summer spent at the lake with her family is used as a time for shenanigans with friends and delving deeper into the study of her body's sexuality, psychological state, and genitalia.