Every girl needs a good, well fitting bra and some spanx. I had previously given up on wearing bras (underwire, pushup) and went with sports bra types for the comfort but I realized that my old bras were old and no longer fit properly. A well fitting, new bra does a lot for an outfit. It can make you look thinner and better proportioned. A slimming undergarment will also make that LBD look great because it smooths away those odd budges. No matter what you wear, what you wear under them makes all the difference.