The other two gowns have yet to surface, but I'll admit that I'm digging Nicole Richie's froufrou Marchesa ball gown. First off, the top is lace with long sleeves--my dress is, too!--and although I typically vomit at the site of tulle, I think its light and fluffy and gorgeous.
Sure, it's not what I'd pick, but it's unique. And that's what's missing in the bridal market these days. Kudos to Nicole for choosing such a lovely look, and congrats to the happy couple!