Lady Oscar

Brigadier Oscar François de Jarjayes (オスカル・フランソワ・ド・ジャルジェ Osukaru Furansowa do Jaruje) is one of the main characters in the manga/anime "The Rose of Versailles", created by Riyoko Ikeda.
Despite being raised as if she were a boy and dressing in males' clothes, Oscar is open about being female. Even as she embraces her femininity, she uses her male position to gain freedoms that she could never have as a lady of the court.