I saw this picture om WhatWouldAshleyWear and had to share (ooh that rhymes). I'd never heard of Christine Centerena before, but she's gorgeous and I love this dress - think it is Preen (or maybe Christopher Kane?), though I am happy to be stood corrected if you know better...
Simple style, reminds me of my Zara dress I bought for my friend's wedding last August (that Olivia Palermo then bought, copy cat). The style is so distinct so I hope I can get away with wearing it again this year!
South Molton St Style