French brunette
She's the one who makes the movie worth watching. Her story, her voice, her character, her acting and above all her sexiness are all impeccable. There aren't many actresses who truly understand how to depict sexiness. It's her subtlety and understanding of feminine beauty that tips the balance. I think the director understood this, and gave her great analog FX, lighting, camera action and music backing.
The rest of the movie: awful music, awful acting (apart from the male governor) and generally just boring. The much-dreaded solitary confinement punishments didn't even impart any sense of cruelty. On the whole, lacklustre.