Um, it's definitely not for me. It's kind of a weirdly unflattering mix of dowdy in shape & length, but also really low cut, if that makes sense? There again, I'm one of those weirdo MNers who thinks you should never wear black or white to a wedding, so...
I think the shape of the top is lovely, but the bottom half looks odd, somehow. But I don't think they've presented it very well on the website. It might look a lot more drapey/flowing in real life.