I have put together a collection of bridal basques which I believe represent some of the nicest, great quality, bridal basques you will find.  They are especially designed to give you the silhouette you want.  They are all beautifully made, and are strong enough to gently shape your body, yet look very delicate.  Some of them actually have quite low backs (especially the ones named low back and torsolette) so take a look at the images to see how low they are.