About an hour into Lizzie, Kristen Stewart and Chloë Sevigny have a heavy makeout session in the hay but remain clothed.
At around 84 minutes, there is a long scene where Chloë is naked so she doesn’t get blood on her clothes. We see Chloë’s breasts and ass as she does Lizzie Borden things and then cleans up after. Later, as Chloë walks up the stairs, we might be able to see full frontal but it is dark and shadowy.
At 92 minutes, Kristen follows suit by getting naked so her clothes remain blood-free but she only shows her breasts.