There are a few options for bras that can help add a size to your bust. One option is a padded bra, which has padding in the cups to add volume to your bust. Another option is a push-up bra, which has padding in the cups and underwire to lift and enhance your bust. A third option is a bra with removable pads, which allows you to customize the level of padding and volume you want. Finally, you could try a bra with foam lining or cookies, which are sewn into the cups to add shape and volume to your bust.
It's important to keep in mind that while these types of bras can add size to your bust, they are not a permanent solution and will not actually increase the size of your breasts. They are simply a way to create the illusion of a larger bust.