Thanks! It is a lace front. It's an arda wig called "the dude", and I thinned it out and chopped it up a lot. They also sell loose tracks of long hair in pretty much all their wig colors, and the long strand is made from one of those.
The whole costume is amazing, but I'm amazed mostly by your wig! It looks so great. Is it a lace-front wig? And may I ask where you got it and how you did the long strand?