Looking for an eco-friendly wedding dress?

If you are looking for an eco-friendly gown, they don't come much more feminine or flirty than Leanne Marshall's Helene wedding gown. I loved just about everything she created on Project Runway, so it's fun to see what she's cooking up these days. Her description of the dress mentions that it can be shortened, but I wonder... can it be lengthened? Regardless, it is divine.