Victoria's Secret has alot of bras you can choose from! If it's padding that you want, go with the very sexy push-up bras (excluding the without padding line), but if it's coverage that you want and don't really care about the padding (like for extra cup size) go with the IPEX, which is a technology they use that has thicker padding only around the nipple area to prevent "nipple show-through". That way, you won't get any unwanted increased size!
The secret embrace bras (used to be just one, now they have many many styles) are made of some kind of foam and they are pretty thick as well.
The only problem you may have with VS is their sizing, they don't carry all sizes in all styles. Generally you'll find 32A-B, 34A-D, 36A-D and 38B-D. Other sizes like 40, DD's and 32C's (or smaller) can only be found in some styles or online.