I can't see any way cosplaying Kill la Kill that won't end up in a horrible case of sexual harassment.
Honestly, not a great idea. This year's anime conventions will be incredibly uncomfortable for anyone attending who is not a massive pervert.
*Story*
This somehow doesn't come off to me as a "This is why you don't harass people" given the disproportionate retribution involved and the fact that even when the police are rightfully involved don't do anything.
This is more like a horror story about "why you should never go to cons in Russia" or "This is why Russia sucks as a place to live".
Whenever I hear the old "If she didn't want to be harassed/raped she should've worn a longer skirt/shirt with less cleavage/whatever!" argument, I usually reply with "What if I take a pistol and blow your brains out right now and then say that if you didn't want to get shot in the head you should've worn a helmet?". It usually shuts them up.
Of course the threat of murder would shut most people up.
As well the fact of the matter is that there is a half-truth to the matter... and it is as such: People always want all the advantages of acting and dressing in a certain fashion, but they don't want any of the disadvantages.
Heck I could imagine it being right in other ways as well, if I was wearing a suit that specifically gave focus on my crotch I'd have no right to complain if people were ogling it. Mind you I am speaking in an extreme, a shirt that shows off cleavage isn't an "equal example" since I am referring to something like a cod piece.
Where the argument falls short is that there is a certain amount of respect you should show everyone regardless of what they are wearing or acting. As well at a Con it is already common knowledge that everyone there is wearing their costumes to look like a character, not to be openly flirtatious with everyone... and even if they were, your advances are very heavy handed and terrible.
Mind you I am sure most of the people who outright harass girls at cons aren't "misinformed" they are likely just creeps who really should just stay away from cons.