Check out this new two-piece set - it's nice, flowy, and modest - and you know it's made it with silex (non-stretch). There are double inner ties so the niqab can be worn up or down. The wrists have double elastic. The skirt has an elastic waist band and side pockets. Top size is one size fits all. Skirt size information listed below.
Skirt Waist Size
Small: 28" Waist
Medium: 32" Waist
Large: 36" Waist
XL: 40" Waist
2XL: 44" Waist
3XL: 48" Waist