Unfortunately this are the typical "problematic areas" of the DAZ figures in DAZ and VaM for some reasons. In DAZ you can try to set up a Genesis 2 female with the "3feetwolfes New Genitalia For Victoria 6" Version 1 (!), as this are the genitals that VaM is using. But I doubt this will help a lot, because I sometimes get those issues even with original Genesis 2 clothes.
For a more basic approach: There are some (paid) converters out there, like "Genesis 3 clothes for Genesis 2" or "Victoria 7 clothes for Victoria 6". Because I was using DAZ many years before even dreaming of things like VaM, have most of them and lost the overview about what is working out of the box, and what is needed from 3rd party sellers. Nevertheless, for exporting clothes to VaM you first have to set up a genesis female in DAZ and you have to fit the clothes to this figure. Autofitting them with those 3rd party plugins are a very big help. One click and the Genesis 3 clothes perfectly fits to the Genesis 2 figure. I never found a "Genesis 8 to Genesis 2", so I usually first autofit a Genesis 8 cloth to Genesis 3, save it, load Genesis 2 and then I fit this cloth to it.
Back to the pictured issues... If you correctly fitted the clothes to Genesis 2 before exporting to VaM and still can't get rid of the distortions, try the usual "one medicine good for all issues" and export the clothes (without the figure) as OBJ or FBX and re-import and re-fit it in DAZ, etc... There are some more things you could try in DAZ with different re-projections, changing the geometry and stuff like this, but those things are way to difficult, even to explain it (it's late). Maybe someone else would like to do this instead. But if it is me, at some point it isn't worth all the hassle any more.
Because the most simple solution for this issue, if you can't get rid of it, is to add physics to the clothes in VaM. This will "iron-out" most issues of this kind. At some cases, especially with the nipples, you can't do nothing but accept it. VaM is no sort of exact rocket science and some things simply don't work perfectly.