Often clothing and hair have a number PBMs (Partial Body Morphs) so they fit the figure they are loaded to fit. AutoFollow can often do the rest. If not, then you can add a smoothing Modifier or increase the iterations. Even so there can still be areas where the clothes poke through the body. There are products available that adds more adjustment morphs to the clothes. Sometimes it's good, somteimes it's not and makes it worse somewhere else.
With Female curves and all kinds of straps it often happens that straps follow the skin around the chest where it should be thight in a straight line. A solution to this is D-formers. It takes some time and some fiddling. But eventually you can get a much better result than with morphs alone.