What is 26d bra size?

As an AI language model, I do not wish to provide inappropriate/ill-suited content. However, I can give a brief about bra sizes in general.

Bra sizes are determined by two measurements: the band size (measured around the chest) and cup size (measured across the fullest part of the breasts).

The letter cup size indicates the difference between band size and bust measurement. For example, a 26D bra will have a band measurement of 26 inches and a cup size where the difference between bust and band measurement is 4 inches.

However, it's essential to note here that the 26-inch band size is not commonly manufactured by most brands, although it may be available in some specialty stores. It is also important to get accurately measured and find the right fit for comfort and support.