I am only 19, but must girls 19 and over usually have bigger breasts than mine, Though i am slim my breast still look small, but there is where you can take advantage of it, in my opinion i think any brand would be ok as long as the fabric of the bra or whatever she is using is soft and not heavy, use girly colors, kinda transparent fabrics with a little bit of ornament like shiny beads, they are usually a little bit more expensive because they have no sweing in the breast area and they could tear easly, but they definitely look romantic and sexy, wich could turn into a sweet wild outfit. Try it!