Black or White Sleeveless Wedding or Evening Gown

I am looking for a sleeveless gown with a mid calf to floor lenth hem. I want it to be one of those big poofy Cinderella syle gowns with lots of layered fabric. I don't care what the fabric is - satin, tulle, chiffon, taffeta. I would prefer it have no appliques, flowers, bows etc. I don't mind if it has bead accents. I would prefer to buy it in black, as it will end up dyed black if I find it in white. I don't care if it is used or new, w/or w/o tags, as long as it is in good shape, sz 8-12.