Firefly & Serenity, the Girls
From left to right : Jewel Staite, Summer Glau, Morena Baccarin & Gina Torres :
Summer Glau as River Tam :
Morena Baccarin as Inara Serra :
Jewel Staite as Kaylee Frye :
Gina Torres as Zoë Washburne :
And you can see Christina Hendricks in 2 episodes. Joss Whedon has definitely good taste in women !