I usually ignore Facebook ads (no I don't want to whiten my teeth thankyouverymuch and I'm not interested in a miracle weight -loss tea or berry)but their funny little computer elves pointed me in the direction of American plus-size fashion brand Igigi. Not only are the dresses actually designed especially fot bigger women but they're modelled by big, beautiful women so you can actually see what the dresses would look like on you if you are a larger lady.
I wish I'd discovered this site a few weeks ago as my wardrobe dilemmas would have been reduced massively. I'd look brilliant in this dress!
It's $142, which is a little more than I usually spend but good value for a dress that fits and some of the dresses are in the sale with fantastic reductions.
This one is only $63.50 which is just over £40 and there's another 30% off at the checkout. Shipping to the UK is $35 and you may well have to pay a customs charge on top of that but you could substantially reduce this if you have friends or family in The States who would send this on to you. I'll be suggesting to my California-based sister that she might like to find me a Christmas present on this site!