Bras explained

Have u ever wondered why A, B, C, D, DD, E, F, G, and H are the Letters used to define bra sizes? But couldn't figure out what the letters stood for. Well its time you became informed! (A) Almost tits. (B) Barely there. (C) Can't Complain! (D) Damn! (DD) Double Damn!(E) Enormous! (F) Fake. (G) Get a Reduction. (H) Help me, I've fallen and I can't get up!