If there's a 1-inch difference between bust and band you're an A cup; 2-inch difference is a B cup, 3 inches is a C cup, 4 inches is a D cup, and so on. For example, if your bust measurement is 37 inches and your band is 33 inches, you would be a D cup because of the 4-inch difference.

Is C cup considered big?

More generally, men and women prefer bigger cup sizes, namely C, D, and DD. Over six out of ten women (60.4 per cent) said that their ideal bust size is a C cup, compared with just over one in two men (53.6 per cent). ... Poland and Romania are the exceptions in that their ideal is a smaller bust size.

What is AC cups?

Measure loosely around the fullest part of your bust. ... Example: if your ribcage measurement is 31, and your bust measurement is 37, your bra size is a 34C: 31+3=34, so 34 is your band size. Since 37-34= 3, you've got a C cup. Fitting hints: If the band size comes out to an uneven number, try the next band size up.