This dress is by Elliot Claire London and from what I can tell from their website is no longer being sold! I bought it a little over a year ago for my May 2013 wedding. It's a perfect off-white tone, really more of a champagne and has a vintage-inspired modern feel. The top has floral-inspired applique details with rhinestones on the bodice and sleeves. It can sit on your shoulders or slightly off. The back comes down to a V, but not so low to expose a bra clasp. Side zipper. The bottom of the dress has two layers of shimmery fabric (see 2nd photo) and a tulle overlay which gives the dress a really ethereal feel.
Basically everyone told me I looked like Galadriel/a fairy princess and it was awesome. I was super comfortable in this dress all night and didn't have to change for dancing :)
I loved this dress, but am a bit of a minimalist and since I have our photos and no longer need it I'd love to pass it on to someone else to enjoy! The size is actually a UK 10 which converts to about a US 6.