Personally, I have never seen the point of crotchless panties. Either wear knickers or don't wear them. Wearing knickers which are missing the most essential bit (the gusset!) is defeating the object. Crotchless underwear may have a place in the grown-up world but they are definitely NOT for underage girls.
The second was this article by Greggory Jantz. No, I haven't spelt his name wrong!
It concludes with this list of what an Eating Disordered family looks like. No "may" look like, or "could", or "sometimes". I am hard pressed to find a single point that marries with our family, unless you think that my viewpoint on crotchless panties for children could be covered under No 6.
Greggory Jantz - in my opinion you are a IDIOT!