My favorite challenge this season was the very first one, the pattern remix of Dana at Made's circle skirt. I made a pink halter dress and my tutorial today is a variation on that dress. The amount of material needed will vary by size. For my skinny 4T daughter I used:
1 1/2 yards of fabric
2 packages of premade bias tape (only one if you finish the hem of the skirt in another way)
The first step is to cut out a circle skirt using this tutorial from Made. You can put it aside until later.
Now let's work on the back. Fold your rectangle in half and press to find the middle. From the middle measure 3" on either side and mark with tailor's chalk or a fabric marker. make your marks on the right side of the fabric. These lines will be the guide for your elastic thread shirring. Before you switch out your bobbin to the elastic thread finish the top edge of the back piece but pressing 1/2" to the wrong side, then another 1/2" and then edge stitch. Now it's time for the elastic thread!