Have you ever wondered why Bras are lettered A, B, C, D, DD, E, F, G and H?

And how are the letters applied to Bra size?  

"A Friend Is Like A Good Bra, Hard to Find, Supportive, Comfortable, Always Lifts You Up,
Never Lets You Down or Leaves You Hanging and Is Always Close To Your Heart!"

How to be comfortable in your new Plus Size Bra