Yes, this. I was at a mall the other day, passed a handful of stores with costumes, and came to the conclusion that it's not a Halloween costume if it doesn't involve a corset.
Tenuous history. A lot of what the Vietnamese will tell you is true is very unlikely to have ever actually happened, but it is their national story and they are sticking to it!!!
Yeah, most places embellish stories about things like that, but it just became kind of a joke because I visited there on a group trip and we heard about them ALL THE TIME