Now that we know how a bra's made and the different parts, I'm going to tell you how to go find out what size you are. First thing you can do is you can try to do it yourself at home. I don't necessarily recommend this because a specialist will give you a more accurate measurement. But if you must, one of the ways to do this is to take a tape measure and measure around your back all the way to the front, right under your breast tissue. The number of inches here is what size band you should be wearing. So remember between a thirty and a thirty-two is a thirty-two inch band. Between thirty-two and thirty-four is a thirty-four inch band. When you go into the store to try on different cups, find the band size with the cup you think you are. Try that on. If it doesn't fit in the cup, try another size. And keep trying until you find one that you feel fits you best. Now an alternative to this which I feel is better, is to find a boutique like the one I work in here in Santa Monica where we're certified bra fitters and we specialize in finding you the perfect size. An alternative to that is going to a department store like Nordstrom. Nordstrom carries a wide variety of sizes and a number of different vendors. Because every manufacturer fits a little differently. The thing I would look out for is if you go into a bra store and they don't have a wide variety of sizes. If they don't carry any bras in a thirty-two band, they probably don't know how to fit. Or if they don't carry any cups above a D, they probably don't know what a cup size means. So I would try to find another store with more variety.