I used a lovely pink textured knit for this mermaid style dress. I love this pattern because it is just two pieces. Both of these dresses are made from the same pattern. There is only a back seam and it slides onto the doll as a tube shape with no side seams or fasteners. I did not line this dress because the fabric is fairly thick, but I loved the textured pattern.
I put a small gather at the bodice to give it more shape, and had to put a few stitches at the top of the back fishtail to control the shape. I did not put elastic at the top of this dress. I just sewed it tight hoping to take up some of the bulk of the material.
The belt was made from a decorative piece of trim with snaps at the back. This dress can be a lot of fun to accessorize. Here I have used hair scrunchies as shrugs for both dresses. Below, I made a shrug-tube from white acrylic fur.