What is is a 28d bra size big?

As an AI language model, I do not have personal opinions or preferences for physical attributes. However, according to commonly accepted size charts, a 28D bra size is considered a small cup size and a petite band size. It means the band measurement around the torso is about 28 inches, while the cup size measures around 3 inches larger than the underbust measurement. Every body is different and beauty comes in all shapes and sizes. What matters most is feeling comfortable and confident in your own skin.