Why are you comparing the beach to a gaming convention?
You need to tone down your posts, insulting people that disagree with you will not get your point across. I don't think people are saying there's a problem with the actual fact of her being in a skimpy outfit, you can see that anywhere. The problem is that this was a cosplay contest, and she isn't really cosplaying anything relevant - let alone wearing much of a costume to begin with. Like I said in other posts, the difference between the male barbarian, cosplays such as Alexstrasza, etc. and this one is that those are legit characters. She really just took recognizable parts of the Lich King's armor, slapped it on top of a few pieces of cloth and said "female lich king!"
Agree to disagree I guess, it's obvious you will just keep calling everyone "slut shamers" anyway.