As Wim demonstrated, for adapting or BUILDING new clothing the new tools are fantastic.

Build a shirt => Fit over figure
Build a pullover => Fit over shirt
Build a Jacket => Fit over pullover
Build an overcoat => Fit over Jacket.

Building up layered clohing is super easy now.
Example a few pages back, (the brown Jacket - Pants pictures)

For adapting clothing, I use the morph brush tools mostly. And both Poser 10 and PPro 2014 have those.

Poser 1, 2, 3, 4, 5, 7, P8 and PPro2010, P9 and PP2012, P10 and PP2014 Game Dev
"Do not drive faster then your angel can fly"!