Yes, Tthe main part of the dress has been cylindrically mapped and you can see that on the skirt area the polygons are distorted, all squeezed up together,especially the areas below the armholes.. When the texture is applied to these and then projected onto the dress the texture stretches to cover the correctly shaped polygons.   To give good results the UV map has to have minimal distotion of the polygon shapes . This is the map I ended up with for the dress I made.