I've ordered a few pairs of VIV and finding the leg sizing and elastic bands to be inconsistent for Plus size.  I'm size 16 with a smaller waistline and the band is tight, so not sure how this would be comfy on larger sizes.  The legs are also just fitting my legs so they may be super stretching on larger legs.  Super comfy though minus the band area and soft.  Hoping they adjust the band on PLUS size.