You'll probably have more luck with this question in the Poser forum.

Your best bet at fitting one model's clothes to another would be to use something like CrossDresser or Wardrobe Wizard. Unless you model or are into resetting joint parameters and groupings, you'll have a hard time refitting one model's clothes to another without these ;o).

There are ways of turning a conforming clothing item into dynamic, but I'm not sure how, although I'm sure there are tutorials and folks like PhilC could help you if you ask them.

Laurie