to make things clearer, there are 3 clothing pieces for which I had modeled in Blender and using some of the helpers. The list is as follows....
- the shirt, which I had used the upper part of the tights helper.
- A pair of jeans, which is the lower part of the tights.
- The apron, which is a combination of the upper tights helper and the skirt helper.
I cannot see why "the shirt hides the apron" a bit confusing, but if you want I will explain it to you.
Typically, when people want to protect there clothes from getting ruined, they usually put an apron over there clothing prior to cooking or serving food. However, in my case, MakeHuman is placing the clothing on top of the apron instead, or that is what it appears to be doing. I guess your confusion was, why would someone put an apron underneath there clothing, which would not serve any purpose, so you could not see how it could happen in MakeHuman?

As a matter of fact, Aranuvir has even explained this to be one of MakeHuman's weakness, and layers of clothing have to be carefully created with vertex grouping, which confuses me, because V-Scorpian-C has mentioned in her tutorial, that you only want to have a mid, left, and right vertex group. So if that is so, then how do you manage layer separation, with only using a mid, left, and right vertex group????