BatgirlCharactersFeature FilmsGotham City SirensHarley QuinnMovie NewsNews Warner Bros. working on ‘Birds of Prey’, not ‘Gotham City Sirens’ for Margot Robbie’s Harley Quinn by Kimberly Melchor January 21, 2018 by Kimberly Melchor January 21, 2018 1 FacebookTwitterPinterestEmail