lots of reasons really. I wasn't supposed to be nude to begin with. I like it how it is. Which is really the most important thing. And people like it as it is so anything else won't be as good.
And it would be a time consuming undertaking to do as I used different tools last year when I did this and I really don't want to have to use them again I can't just open the old file, take off clothes and hit render. It would be a much more involved process.