When it comes to wearing panty hose and panties, keep in mind Panty + hose their basically long socks attached to a panty, usually they have a cotton crotch, already. Tights however don't usually have a cotton crotch, so boy shorts or other underwear is acceptable, keep in mind if you have an aversion to panty lines go with the thong it's less noticeable. Leggings that are not covered by a skirt or long top look best if either a thong or g-string or nothing is worn underneath them, Hope this helps.
Wear whatever is comfortable for you. At 13 no one should be seeing your underwear so it doesn't really matter what you wear as long as it's comfortable. Also, always wear panties when you wear pantyhose. You can get yeast infections otherwise :/
i say boy shorts because the crotch of the shorts is mostly cotton which allows the vagina to breathe. that is very good for the health of you goods. the crotch of boy shorts is also multi layer so it has a good bit of absorbancy in the event of vaginal discharges or an unexpected start of your period. with that being said, it doesn't matter what pelvis shape you have boy shorts look GOOD on them. so damn sexy!
As a teenage boy I say go with the boyshorts I know a lot of girls who wear them and they never complain. plus they look good to. When You you get older try switching between cheekies boyshorts and briefs those are the cutest least revealing and all around sexy while modest looking.
I really don't think it exactly matters what undergarments you select to wear. I honestly prefer boy shorts but if anyone is commenting that there is a certain selection to wear as a thirteen year old girl I would suggest extending the middlis digitus.
Boyshorts or briefs. And when wearing a pantyhose, don't forget the panty.
It shouldn't matter. Nobody is going to see it. At least, I would hope so. You're still in middle school I assume. That's too young for people to be seeing your underwear, and too old for it to be "accidental."
Uh, 13 is waaaay too young to be wearing a thong
by the way, don't be offended by me saying your too young (I'm 13 too)