Funny! I was thinking the same thing about the whole sexy costume stuff! They make everything sexy now! I was even going to dress as a "sexy shoelace" to prove that point!
Overall the costume is great. Very creative. I also think the wire hanger necklace is funny.
About it being offensive, everything about halloween is offensive!! Hello?!!! Bullets in heads, bloody bodies, dead people, decapitated people, everything! So I think arguing about it is somewhat pointless.
I like the costume and I admire your guts to actually post it!