I keep looking at these dresses online, and I think they may suit me (size 14 hourglass). But are they worth the money - most seem to be made of viscose. Do they wash and wear well? In a bad light, they kind of look similar to Fenn Wright Manson dresses, but for much more money. I'm looking for a couple of dresses I can pull out for weekends/nice dinners etc, but are easy to wear. Hoping not to spend more than £250-ish each.