Carla Gugino has joined the cast of Watchmen, Warner Bros. Pictures' adaptation of the DC Comics limited series being directed by Zack Snyder, according to The Hollywood Reporter.

The Sin City acctress joins Patrick Wilson, Jackie Earle Haley, Matthew Goode, Billy Crudup, Jeffrey Dean Morgan and Malin Akerman in the movie, which is set in an alternate America that has passed a law banning costumed crimefighters. When one is murdered, the remaining members set out to solve the mystery.

Gugino will play Sally Jupiter, a burlesque dancer-turned-costumed heroine and sex symbol the Silk Spectre who is part of the Minutemen, a group of heroes who preceded the Watchmen. She also is the mother of the new Silk Spectre (Akerman).

She will portray Jupiter in varying eras, playing different ages throughout the movie which is to start shooting in the fall in Vancouver.

Watchmen was released March 6th, 2009 and stars Malin Akerman, Billy Crudup, Matthew Goode, Jackie Earle Haley, Jeffrey Dean Morgan, Patrick Wilson, Carla Gugino, Matt Frewer. The film is directed by Zack Snyder.