[prettylily]

Usually adding inches to your band is wrong. The best way to do it is to try on bras starting with the same number as your band (~30 in your case). If I were you, I'd try As and Bs and adjust as necessary in both band and cup. Make sure that the band is quite snug--you should only be able to fit two or three fingers comfortably under it. The edges of your cup should lie flat against your chest after you've scooped all your breast tissue into the cups.