In Wardrobe Wizard, the quality of the morph has a direct impact on the quality of the converted clothing. If you're not getting good results with the morphs you choose, try making your own morph, or using a different morph pack.

The three pictures below illustrate the problem. The first is of Posette wearing Nerd's chain link bikini - this is the original clothing item on the original figure, the 'perfect quality' version. The second is of V3 with a fat morph wearing the bikini. The third is of DinaZ, a fat morph of DinaV, wearing the same bikini. I'll let you decide for yourself which is the higher quality morph.

The 'fat' morphs are an extreme example. Here's a good example of the chainmail converted to a moderately morphed 'curvier' Posette, and is more typical of the results you can expect from Wardrobe Wizard: