It's fair to say the reception of Suicide Squad has been decidedly mixed.

Despite being almost universally panned by critics, the film has obviously struck a chord with some movie goers as the film took in $745 million at the global box office. One thing that almost everyone can agree on though was that Margot Robbie's Harley Quinn was the best thing about the movie.

There'd been talks of Robbie leading a Suicide Squad spin off even before the movie's August release and now things are starting to move forward with the announcement that she'll be reteaming with director David Ayer for Gotham City Sirens.

The Hollywood Reporter have revealed that Robbie has signed on for the film which follows the adventures of Gotham's most dangerous female villains. The comic, which debuted in 2009 focused on the central trio of Quinn, Catwoman, and Poison Ivy.

There is also a Suicide Squad follow up in development at Warner Bros. as well as several other spin offs (most likely for Will Smith's Deadshot) but Sirens is the one that has the most heat at the moment and Ayer is expected to begin work on it once he finishes with Max Landis' Bright for Netflix.

Robbie meanwhile has got Tonya Harding biopic I, Tonya in the works. That film also had a bit of news this week, with the announcement that the Winter Soldier himself, Sebastian Stan, has joined the cast.