For the base, tulle or light chiffon gathered into the skirt, for the lower part of the dress, will do the trick.
Re-attach yarn for the other side and mirror these instructions for the second side.
For the lower portion, I am going to measure 1.5 – 1.75 times the Round Waist measure and cut my tulle. I will then run a few rows of loose machine stitch along one side of the cut piece, to gather it up. Attach the gathered part to the lower part of our yoke and our dress is fully done.