Let's draft the pattern for this asymmetric dress. The slanted style line splits dress in two halves, one is gathered at bust and the other one is gathered at skirt.
Both gathered volumes are obtained with an interesting dart manipulation.
You can sew it in a variety of fabrics, from medium weight jersey or crepe to other types of knits or wovens - but pick something with a little stretch and drapey hand. To draft the pattern, start from a basic dress with darts and appropriate ease to the fabric you will use (negative ease if you pick a knit, zero to positive ease for a woven fabric with stretch).