I'm wondering why the preview looks so different from the render...

Preview:

Render:

It's V4 (left) and M4 (right), with a second skin bunny suit applied via Semidieu's script.

I don't actually have a burning need to put M4 in a bunny suit, and if I did, I could probably get by using a V4 male morph. I'm just curious about why the preview doesn't look like the render. Normals forward/remove backfacing polys doesn't make a difference. Render is in FF, but the results are the same in SF.