For many years, on Halloween, after visiting higher end costume shops, I used spirit gum cosmetic glue (and spirit gum remover afterward) to wear a couple cute "real" fake mustaches. I was able to trim the net backing on the re-usable moustaches to suit the look I wanted. As decades went by and narrower moustaches came into style, I trimmed them again, although I never ended up happy with that narrower style. Of course, before gluing the moustache on, I had to minimize my own peach fuzz, so the spirit gum didn't gum up so much. The moustaches looked and moved like a real ones for years, because they were wig quality with flexible net backing, plus spirit gum has a little give in it.
Under my shirt, I wore cut foam to turn my bosom into a more masculine barrel chest. I overheated from that. The suit was of a low-contrast subtle plaid, thin lambswool, altered to fit (color scheme attached below). I wore one of my dad's solid dark ties from the sixties. The belt color also blended. It was slightly cushioned leather about 1.5" wide and was oiled before I knew what oil-tanned was. So soft! Almost like a sueded surface. I did look like a man. Totally passed. Lots of fun.
To help me remember the name of the that costume's color scheme today, I used an excellent website which includes considerations for color-blind people in its content.
https://www.colorhexa.com/738678
