Did you try to paint the Tighten W-Map for the shrinking?

In the fitting room menu, you can select the Tighten function.
There you can Paint how much a clothing item gets tightened to the underlying figure.
Click on the paint palette just behind the Weight dial to paint where the Tighten function has to do less Tightening.
Use the Substract brush to do so.

I just tested it and it works.

Poser 1, 2, 3, 4, 5, 7, P8 and PPro2010, P9 and PP2012, P10 and PP2014 Game Dev
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