I've amused myself with the making of some plain underoos for M4. They're conforming and contains most of the FBM morphs from the Morphs++ pack (like Bodybuilder, heavy or young) as well as a couple of ..er.. not quite family-friendly morphs. If you don't want those, they're easily removed (or simply avoided L) 

They're available at MY SITE :)

FREEBIES! | My Gallery | My Store | My FB | Tumblr |
You just can't put the words "Poserites" and "happy" in the same sentence - didn't you know that? LaurieA
  Using Poser since 2002. Currently at Version 11.1 - Win 10.