I am looking for a posh frock that I can wear out to dinner with DH in Thailand next month. It will be very hot so I want something in natural fibres - cotton, silk or viscose are all good. A polyester lining completely rules things out, as it is no good in the heat. Unfortunately most of the dresses I've looked at have poly or acetate linings.
The dress also needs sleeves (a cap sleeve will do), or if strapless it will have to go with a lilac short-sleeved cardi that I already own.
Any ideas?