This concept art from The Wolverine comes via artist Joshua Min, who posted a few early images of the Viper, including one showing how the "shedding her skin" idea could have been a lot more naked and more... gooey. Sort of like Mystique from the other X-Men films, except covered with slimy goop. You can see why they decided to back off that idea a bit. Check out his art below, and more at the link. [Joshua Min via Comic Book Movie]