I thought I needed to order this dress a few sizes larger so it wouldn't be too tight on me.  Smart move on my part to get the perfect flow in the dress; but, I don't have giant boobs so I had to take in the straps and the upper part of the dress so that I could get the perfect look.  It worked.  I wore a slip beneath as recommended; but may not have really needed to.  This dress makes anyone look fantastic.