Nu You
Consider the NuBra next time you are shopping for a strapless bra <ugh>, these are horrible. No matter what you do they always slip down and leave you with a very unflattering shape. The NuBra are two silicon cups with an lite adhesive on the interior. Just press against that special part of your chest, ensure the edges seal against your skin and voila, you're comfortable. No seams, and there is a clip to help enhance cleavage. TALL Blonde has used them and they're great.
