Here's a belted voluminous look with un-belted shot to compare. Front view is reasonable, but not the best. The side view shows why (I think) a large bust can be a disadvantage with these type of dresses. The front is visibly higher than the back. I had this effect with numerous dresses in multiple voluminous cuts/styles which lead me to think this way.

What do you think? Am I dong something wrong?

The link: http://www.legacyofpearl.com/Belt-Belt-8299374