The name of the long-rumored, Harley Quinn-centric DC movie will be Gotham City Sirens, THR revealed today. Suicide Squad director David Ayer will return to Gotham along with Margot Robbie, who will play Harley Quinn, and a cast of female superheroes and supervillains from the DC Universe. Gotham City Sirens the name of a comic book series that starred Harley, Catwoman, and Poison Ivy (Harley's girlfriend). Previous rumors have suggested that the movie could be called Birds of Prey -- the name of a superheroine team led by Batgirl/Oracle Barbara Gordon and occasionally starring Catwoman -- but Sirens likely gives Ayer more room to develop the so-bad-she's-good Harley Quinn from Suicide Squad. Robbie, already a rising star, has been catapulted to megastardom by the success of Suicide Squad. She was recently named IMDb's biggest star of the year, and won a Critics Choice Award for the part. Both Catwoman and Poison Ivy have appeared in previous film incarnations, with Uma Thurman playing Ivy in Batman and Robin and Catwoman having appeared in three separate feature films -- Batman Returns, where she was portrayed by Michelle Pfeifer; Catwoman, played by Halle Berry; and The Dark Knight Rises, played by Anne Hathaway. Geneva Robertson-Dworet, whio also wrote scripts for the Tomb Raider remake and Warners' Sherlock Holmes 3, is writing the screenplay.