Got happy with elastic thread in the weft...thought I was making myself a summer dress but it seems the top is perfect for v...
About eight inches with elastic weft every thirdish row pulled fabric in to about half it's original width when taken off the loom.
Wove the front ending with the elastic part (elastic threAd about every third weft shot, pulled tight) and then an inch or so of plain. Then I wove the back starting with the elastic part,then plain weaving no elastic for the bottom half.