Hello,
I've just seen this, and not sure if you're still looking for this dress? If you are, i bought the Symphony Dress from coast in aubergine size 14 (i'm normally a 12/14 - the 12 came up slightly small) in Sept last year for a wedding that is in 2 weeks, i've not worn it yet and plan to where it at a wedding on the 4th Feb, then, i'll no longer need it.
Let me know if you're still stuck and we could sort something out.