I ordered one for my upcoming trip ($35 from 6pm.com). Reversible clothes save space plus tops that are 2 layers thick appears more streamlined. The material was also key, this dress is made of 60% Modal, 40% Organic Cotton, which means it will dry quickly and retains some breathability and feel of the cotton.
I am usually a size small for dresses but I got the medium for this one after reading some of the reviews. For me the medium hugged well enough to show a waistline but not so tight that I have to suck in the beer belly .
There are plenty of other reversible travel dress options I found, again I went with the Kuhl Vega because of the material and the deal I was able to find.