I wasn’t so much reacting to the dress being OK or not when I responded before. Whether this is OK or not, in my mind has to be seen in the context of where the kid is going to, the atmosphere at the party and the overall behavior of the child/teen. The dress in itself is not a problem, the combination maybe could.
As mentioned before, if a teen would be 19, our countries are sending them off to war, so this dress seems not to be too much of an issue then. If the child is thirteen, then the party should be relatively innocent as well. (The examples you enclosed may be expected to hurt/offend others and other people may rightfully take offence, that is rather different from the original post in this question.)
That doesn’t take away from my opinion that those on this thread judging a teenage girl on the dress she is wearing with terminology as above is revolting in my mind. I will howveer stop saying that, I make me think of my grandfather.
I guess it must be a cultural thing: through TV, American kids are exposed to about four acts of person-to-person violence per hour during prime time of which over 50% end in death. (Dying to Entertain by PTC this kind of clothing provokes indignant damnification if worn by a teen to a party.