“Men always use that - don’t they? - as their defining compliment. ‘She’s a cool girl’.” - Amy Dunne, Gone Girl. She’s not like other girls, she’s a cool girl. In her 2012 bestseller Gone Girl, Gillian Flynn gave this trope a name and proceeded to savagely tear it to pieces. If we look at cool girls onscreen - and at celebrities who often play this persona for the public - we can identify the specific elements that make up this character’s DNA: she’s one of the guys, she has