Gotham City Sirens

Cosplayers dressed up as Catwoman, Poison Ovy, and Harley Quinn, who appear in the Gotham City Sirens comic book series.

The Gotham City Sirens refers to a group of female Gotham City villains from the DC Comics universe and consists of Catwoman, Harley Quinn, and Poison Ivy. The Gotham City Sirens were created by Paul Dini and Guillem March, first appearing in Gotham City Sirens #1. (2009).