1. Zero all your breast morphs in frame one. Set the keyframe by clicking the "+" next to the key icon at the right of the loop indicator.

2. Load the dynamic dress

3. Select frame 30. Set all the breast morphs back the way you want them.

4. Run the cloth simulation. (Be sure you have chest, abdomen, hips, shoulders e4t all selected under "colide against."

Ought to work.

Since you already have things set up, here's the short cut:

Select frame 30. Hit the "+". Select frame 1. Zero the breast morphs. Hit the "+"

Ought to work equally as well.

The secret is to make sure that each and every polygon of the figure is inside the clothing prop before the simulation begins. I use this very technique to put bras that fit on some of my more endowed ladies. Works like a charm to fit THEIR charms!