For your consideration are a very unique slippery smooth pair bikini metallic mens panties
These are hipster style, designed for men not women (unless you like the front puffy) For the ideal fit your waist/hips should be somewhere in the middle of the range not at the beginning or the end.
Skirts and bras are sold separately and are ONE SIZE items.

Sizes are as follows:

M will range from 24-36"
L will range from 26-40"
XL will range from 28-42"