I only work with variations of my remapped Posette (PosetteV3 & PosetteV3wG), so fitting the catsuit for me isn't a problem. I find that the ability to texture the catsuit with 2nd skins adds a whole new dimension of realism to 2nd skins, since the catsuit has built in natural looking folds and wrinkles at the knees and elbows.
Here's one from my Star Trek Posette series, featuring my cute sexy Vulcan. The catsuit is textured with a V3 2nd skinn with zipper, and she's wearing freebie cyberboots for the P4 Fem.
DPH
STOP PALESTINIAN CHILD
ABUSE!!!! ISLAMIC HATRED OF JEWS