A lot of models have D-cups. Few go beyond.
Cindy looked at her new curves and loved them already, but knew she could go bigger and really stand out-- just like her growing nipples. Wow.
She put the D-cup back on the shelf and searched for anything larger. She ran across a massive one marked "H" and called it a target.
She bought it, getting a strange look from the saleswoman (who was promptly asked to sample the "Breast(-)" perfume before Cindy left the store, deflating from a large C/low D to a small B.), and Cindy went home.