This is what I believe James Cameron should have done with that Na'vi Boobs.

This is a video of the type of Wobble application that should be written for the iphone

Jessi Poser strand based hair poser boobjiggle

Here is a video of the Alyson Character rendered in Poser Pro 2010. I used dependent parameters to make the breast move. I edited the hip x,y, and z rotation parameters and linked them to the breast morphs using the start teaching tool.