Wearing any number of options from our selection of Harley Quinn costumes and costume items will "ice the cake" as far as completing your Harley Quinn transformation. To truly look and feel like Harley Quinn, we suggest a budding, unhealthy love for the Joker followed by a protracted submersion in volatile chemical compounds. After these two essential steps, we recommend chaotic applications of make-up and arming oneself with a sizable circus mallet. Looking and feeling exceptionally "cray-cray?" Then it's time to dive in with one of our quick and easy, comic-accurate costume options.