I'm going to wear my sister's underwear.
Why do you want to wear your sister's underwear?
It feels good to wear a woman's underwear, a desire I have had from a young age.
It is normal to be curious about things but you shouldn't use other people's underwear. It is gross and people will think you are a pervert.
I'll find another way to come across some woman's underwear.
You should just stop with the women's underwear altogether. You ought to just stick to wearing men's underwear.