Venturing nervously into this topic for the first time...
I've got a week or so to find an outfit for a wedding. Timing is late afternoon going on until evening.
My problem is that until recently I've fitted nicely into a size 10 dress and not had too much trouble finding things that look OK. Recently I've not been too well and have gradually put on weight, sadly very unevenly. I'm now a size 8-10 in trousers and a 12-14 in tops with a very bloated abdomen. I've held out for as long as possible in the hope that I'll lose some weight but that's obviously not going to happen. 
Yesterday I spent the day in Debenhams, BHS, M&S and a few other places and found precisely nothing that I liked or that would fit me.
I want something below knee length ideally as anything that finishes on the knee makes my legs look awful. Thigh high suits me but it's inappropriate for this do. I can't have anything with a waist because I haven't got one. I suit V necks best - anything with a square neck emphasises my rather beefy shoulders and I'd like to find something that was reasonably flattering although at this stage I'm beginning not to care too much as long as it fits.
Solid black is out and yellow does nothing for me. I hate pink with all my heart and soul but I rather like blues/aquas. I'd like something that I can accessorise with black as I have shoes, bags, jackets etc.
Think you can help?