Ok... here's the "math" :

First, take the tape measure and measure around your body right under your breasts. This would be the area where your bra will strap around, the area right on top your rib cage. We'll call this Measurement 1.

Now take the same measurement, but a little further up over the fullest part of your breast. This will help determine your cup size. We'll call this Measurement 2.

Now, add 5 to Measurement 2. If it ends up an odd number, round up one. This is because bras only come in even numbers, and you'd rather have it a little big and be able to size it down than have it too tight around.

In order to find your CUP size, you want to take the difference between Measurement 1 and Measurement 2. Use the information below to get an idea of your cup size:

Less than 1/2 inch is an AA cup.
1/2 to 1 inch is an A cup.
1 to 2 1/2 inches is a B cup.
2 1/2 to 3 1/2 inches is a C cup.
3 1/2 to 4 1/2 inches is a D cup.
4 1/2 to 6 inches is a DD cup (or E).
6 to 7 inches is a DDD cup (or F).
7 to 8 inches is a G cup.

i'll stick with the itty bitty tIIITy commitee........CLItTies rule!!!! and tiny Bloobs are grand!!!!