If you are using moprh dials and no magnets, methinks youre stuck. You could try to scale up on the Z only. It won't be pretty, but could work. If the breast moprhs are magnets, then you can have the magnets effect the prop by going into the prpoerties of the magnets and looking for the add elements to deform and add the prop. Someone with MORE experience can help ya! :)

"Few are agreeable in conversation, because each thinks more of what he intends to say than that of what others are saying, and listens no more when he himself has a chance to speak." - Francois de la Rochefoucauld

Intel Core i7 920, 24GB RAM, GeForce GTX 1050 4GB video, 6TB HDD space
Poser 12: Inches (Poser(PC) user since 1 and the floppies/manual to prove it!)