Well, it IS the outer line, but I notice it also makes up the edges of her clothing. I think it works well for me is, in a black and white format, it helps break up edge lines from softer definition lines of joints, muscles, and body features.
Mmm, that makes sense. Especially up top where it goes right into the bow there. I guess it's just that those lines I'm talking about just happen to only be on the edges of the clothes; And since they're the same thickness as the other thick ones that outline her body, I think most people would naturally assume they are the edge outlines of tlhe clothes as well.
Otherwise you say details; is that meaning she has black bands on the edges of her clothing? Just unsure if we're talking about the same lines, not talking about any detail lines on the inside sections of them.