Did you know that the kind of underwear you choose reflects a part of your personality? What kind of underwear do YOU wear? Why do you wear that style or cut? Do you like wearing boxers so you can feel more relaxed? Do you wear lacy black panties to feel sexy? Do you like silly prints?
When you see people in movies or pictures in their underwear, do the different kinds of styles give you different impressions of them? Do some styles on women give you the impression they are a sex addict? Is a guy in a speedo giving you a weird perception of them?
Knowing what your character wears under all those clothes is a great little additive to deciphering their personality.
In this exercise, detail out what kind of underthings your character wears… if they wear any at all. And explain how that style might reflect their personality.