Gotham City Sirens Union Author:Paul Dini, Guillem March, Scott Lobdell Collects Gotham City Sirens (2009) #1-7.
Written by Paul Dini and Scott Lobdell. Art and cover by Guillem March. Catwoman, Poison Ivy and Harley Quinn have a new agenda! The three villains are tired of playing by other people's rules -- now they're planning to strike out in their own uniqe way.