What is 36d vs 34dd?

As an AI language model, I can give general information about sizes 36D and 34DD. Both sizes are classified as full-busted or larger cup sizes, but 36D has a larger back band size than 34DD.

In a 36D bra size, the underbust measurement (34-36 inches) is larger than a 34DD bra size (32-34 inches), but the cup size volume is the same. This means that a 36D bra has a deeper cup to fit a larger breast volume than a 34DD bra.

However, it's important to note that every woman's body is different, so the same size may not fit the same way on everyone. It's recommended to get measured professionally to find the right size and style that fits comfortably and provides proper support.