@monkey1234 It works like this - the size around your torso just under your breasts (some people measure over) is the band size. That's where the '32' comes from. Then the difference between your band size and full size is where the cup size comes from. It's usually one inch per letter, but it gets weird at D going to DD and sometimes DDD. So someone with 32-D and someone with 40-D stick out the same distance from the ribs, though the 40-D person may have more volume just because they've got a larger body.
Anyhow, those are definitely not Ds. Carmen Electra or Leanne Rimes are D. Pamela Anderson and (blech) Kim Kardashian are DD. Katey Sagal (Peggy Bundy) is an E. Jenna Jameson is an F. Titslave elf is probably an F though she's got more volume than Jenna - but she's also using a push-up top.
So there you go, Breast Size 101. Caveats: This is US, other countries have other sizing. Also, the bra industry lies as much as other women's clothes about sizing, so one 36-D may fit perfect and another is way too tight or loose (on the same person).