I hope everyone who is a fan of Harley Quinn has gone through the Harley-related communities like
harleen_quinzel and
jokerxharley to view all of the pwetty costumes that people wore for Halloween (or just in general!)
When I was 11 (1993) I wanted to be Harley Quinn SO BADLY for Halloween ~ but since my mom didn't have time to sew, all that we could find with was a Pierrot costume. I just TOLD everyone who I was and used my best Harley Quinn voice to impersonate her all night. XD
I don't know if I'd ever cosplay Harley for something like SDCC (I'm more than likely to cosplay Zatanna, Sugar and Nocturna instead) but I am oh so happy to see so many Harley's gallivanting about the world!