I call this my “Singlet Dress”.
The top is so simple and cool (but for cooler evenings you may put a fitted top under it).
The beautiful full swirling skirt starts from just under the bust line to flow softly down.
Sizes do vary from one style to another and represents the circumference of the actual garment not of your body. To ensure you order the correct size consult this “measurement table” and select the size that fits your body.