Celebrating MIL's birthday with a bit of a do in a few weeks and want to get a nice dress to wear. It's an evening meal in a hotel (not too posh) and I know a few other people will be wearing nice dresses, and I would like to as well as I have been looking rubbish for ages and would like to look decent for a change. Something reasonably casual so I could wear it again.
Problem is I never wear dresses, or even skirts. I have tried lots of styles on and loads seem to not suit my body shape at all, so not sure what I am doing wrong 
I am 5'6" size 8-10, shortish legs, good waist, medium boobs, wide shoulders. Oh and I need to keep my upper arms covered (so sleeveless is out) due to scarring.
Wrap styles really do not suit me at all, and anything without a defined waist makes me look loads bigger than I am. I am flummoxed - I think the problem could be the pesky shoulders.
Any ideas what styles might suit? Budget anything up to £100.
Thank you - if you have read all this and manage to find anything half decent I salute you 