Do girls wear underwear under pants?

Answer 1

Sometimes.

I for one, prefer not to. Panty lines are really tacky. I will wear them when

1.) Private parts are likely to be seen or...

2.) to prevent the rubbing of course material, like denim.

Answer 2

Personally, I prefer not showing them or letting them be seen by anyone I don't know.

Answer 3

Yes, very much.