How is this look acheived

[anatomicallycorrect]

I'm not interested in anything but the weave, LOL b/c Brandy's lookin tow-up otherwise, but that part that is at the top of her head, I know that's a weave but is there a specific piece that you put on that is pre parted, and what is the piece called?

 

[Legend]

I think it's called an "enclosure"? I'm just not 100% positive.