It's been confirmed that Eva Green is Ava Lord in Sin City: A Dame to Kill For.
Ava Lord is described by Frank Miller as "Every manís most glorious dreams come true, she's also every man's darkest nightmares. From the start, we knew that the actor would need to be able to embody the multifaceted characteristics of this femme fatale and we found that in Eva Green. We are ecstatic that Eva is joining us."
Also, it's now confirmed that Julia Garner is a stripper in the Long Bad Night segment written by Frank Miller for the film.