Apocalypse fa-shun.

Minki Cheng

I've only given this a little bit of thought.

If it is the end of the world, fashion is going to be the very LAST in what you're thinking about. Unless, its for survival techniques. Specifically, intimidation and camouflage. There are always two kinds of people in post-apocalyptic movies: foragers, and hunters. 

Personally speaking, I would be a content to forage and hide wearing simple camouflage clothing for the rest of my life. I would be content to avoid all confrontation, like a little turtle. No more high heels, make up or jewellery, just camo and the basics for me.