One of the best things to come out of an up and down 2016 for the DC Extended Universe was the first appearance of Margot Robbie as Harley Quinn. Her debut in Suicide Squad quickly established her as a fan favorite character, inspiring interest in her being given a solo series. Robbie herself has taken a major interest in the character and was the one to pitch the idea of a Harley-led film to WB. Ultimately, she has been granted her wish in the form of Gotham City Sirens, a project that will re-team her with director David Ayer.

Since the project was announced, fans have wondered what storyline the film would follow as Harley teams up with two new female villains - Catwoman and Poison Ivy. With the project being so new in development, there have not been very many indications as to what story it could follow, but thanks to Robbie's recent readings, there may be some new clues after all.

Robbie was spotted by Twitter users at an airport reading an unidentified comic, until one eagle eyed Reddit user (via CinemaBlend) noted that Robbie is reading Harley Quinn Valentine's Day Special. The photo itself does little to help verify this being true, but based on the following comparison, it looks like it is indeed the case and could point to the potential influences Gotham City Sirens could draw from.

In this particular issue, Harley Quinn ends up winning a date with Bruce Wayne thanks to a charity auction, which leads to her kidnapping Batman. This exact plot is not something expected to be the focus of Gotham City Sirens, but she may still be looking to draw inspiration from this comic.

It would not be too surprising for Ben Affleck to appear in some capacity. He has so far appeared in two films already and will next appear in Justice League; a brief appearance in Wonder Woman wouldn't be too surprising either. Having Bruce Wayne or his hero persona appear to try and thwart the female trio makes sense not only because of his history with Harley - and likely unseen ties to Catwoman and Poison Ivy - but also for the simple fact that a film with Gotham in the title should have an appearance by their most famous hero.

Again, this is no guarantee that Gotham City Sirens will take an influence from the Harley Quinn Valentine's Day Special, but with it's one of the comics Robbie is reading after the film was announced, it is hardly a stretch to think it could happen.

Gotham City Sirens is currently without a release date, but we will keep you updated as the project develops.

Source: Margot Robbie Turkey (via CinemaBlend)