Little Monsters will be happy to see their icon in Sin City A Dame To Kill For.

Lady Gaga confirmed through her Instagram profile, that she has indeed been cast as an actor for director Robert Rodriguez’s latest film. Rumors suggested this news months ago.

She joins other new femme fatales Eva Green, Julia Garner and Crystal McCahill. Returning cast members include Jessica Alba, Rosario Dawson, Mickey Rourke and Bruce Willis.

Judging from her Instagram comment, she will be a part of the story that focuses on Joseph Gordon-Levitt’s character.

The depth of the singer’s role is not officially announced, but she can be seen in the latest red band trailer featured at San Diego Comic Con.

A sequel to Rodriguez’s own 2005 film Sin City, the movie is a collection of short stories based on Frank Miller’s classic comic book series.

The R-rated film is slated for an August 22nd release.

Any Little Monsters out there excited by this news? Does it make you want to see the film? Does it not even matter? Let us know in the comments below.