Three months after it was first reported that Margot Robbie pitched a female-centric DC film to Warner Bros., the project now has a writer as well as a title and director. The news dropped just last night that the project, now titled "Gotham City Sirens," will reteam Margot Robbie with her "Suicide Squad" director David Ayer.RELATED: Harley Quinn-Led Gotham City Sirens Taps Suicide Squad’s Ayer to DirectFollowing the announcement, Ayer tweeted out a confirmation that he's on board to direct the film, including a picture of the titular Gotham City Sirens in his tweet. The picture includes Harley Quinn, obviously given Margot Robbie's involvement, as well as Poison Ivy and Catwoman.

The image Ayer tweeted comes from artist Alex Garner. While Poison Ivy and Catwoman have been in feature films before, they've not yet appeared in the current Warner Bros./DC movie-verse. Considering their prominent role in the "Gotham City Sirens" comic book series from Paul Dini and Guillem March, they seem like no-brainers for inclusion. However, this shouldn't be taken as confirmation of their inclusion in the film. This very image is one of the first that comes up when you Google "Gotham City Sirens," so it's likely that was Ayer's motivation for tweeting it. At most, it's proof that Ayer's aware of the comic and its core cast.

Margot Robbie is set to reprise her “Suicide Squad” role as Harley Quinn and will also executive produce the film through her first-look deal with Warner Bros. She reportedly pitched the idea for the film to the studio. Geneva Robertson-Dworet, who is working on scripts for the “Tomb Raider” remake as well as “Sherlock Holmes 3,” has been tapped to write the script. “Gotham City Sirens” does not yet have a release date, but it has reportedly been fast-tracked.