Harley Quinn may be a relatively new character in the DC Universe, having only got her start in the 90s sensation Batman: The Animated Series, but the cosplay and merchandising favorite has already had enough costume and character makeovers to make the Joker blush. From the black-and-red Harlequin costume of her initial B: TAS and comics run, through her countless comic book and video game reincarnations, and the "Daddy's Lil' Monster" tee that took Halloween 2016 by storm, Harley Quinn's look has been evolving since the moment Paul Dini and Bruce Timm unleashed the chaotically charismatic …