A bodycon dress in stretchy knit fabric gives you the sleek silhouette without the restriction of a rigid material. The knit moves with your body and actually allows you to move. The fabric has enough recovery that it holds its shape through wearing and washing. These dresses work well for nights when you want the confident line of a bodycon but you also need to actually function in your outfit. A quality stretchy knit is the difference between a dress that feels like armor and a dress that feels like a second skin. The fabric choice matters more than anything else in this category. A cheap stretchy knit pills and loses shape. A quality knit maintains its structure and its comfort through wear.