You have a few things on your side: you are young and you put on the weight over time, instead of in a couple years. Continually hydrate your skin with good creams or oils as you go (like Emu oil). They aren't cheap, but taking care of your skin through this process may help. I don't have personal experience with this, but I'm in medical school and that is what we have learned about skin changes through drastic weight changes. Good luck to you!
Chelsy M. likes this comment.