1. Princess Leia
A New Hope, The Empire Strikes Back, Return of the Jedi
It was really no contest here. No, really, it wasn't. She's the definition of a badass, and a great leader. She can rock any hair style you throw at her (though her frizzy Endor hair wasn't super flattering... blame the moisture). She starts out getting up in Darth Vader's grill, commands the Hoth base, makes out in a space worm's intestinal tract, and ends up being just as tough and effective as all the rebels, if not more. Also, she, um, talks. Which is a huge distinction here.
UPDATE: Actress Carrie Fisher, who played Princess Leia in George Lucas's original saga, passed away at the age of 60, after suffering a heart attack over the Christmas 2016 holiday.