The Nancy Callahan you once knew is gone.

A new clip from “Sin City: A Dame to Kill For” spotlights the transformation of Jessica Alba’s returning character from a stripper with a heart of gold to a woman with a vengeance.

Alba’s Nancy isn’t coping well following the death of her mentor John Hartigan (Bruce Willis). “Maybe I’ll go crazy,” she says after being taunted by the voices in her head. “Crazy’s sounding pretty good right now.”

She then chops off her long locks and cuts up her face, looking like a more suitable companion to Mickey Rourke’s Marv.

The sequel to 2005’s “Sin City: A Dame to Kill For” also stars Josh Brolin, Rosario Dawson, Christopher Meloni, Jeremy Piven and Jaime King.

The pic — directed by Robert Rodriguez and Frank Miller from Miller’s screenplay based on his own graphic novels — hits theaters on August 22.