I'm not sure what to believe. It be easier to assume those are store boughts, and that maybe she has had several implant surgeries over the years to achieve that size, since you obviously can't jump from being a typical A/B/C/D cup to whatever she is now, but then I do realize its also possible for someone to experience middle aged extreme breast growth.
Whether she is a radio producer or personality is kind of different from being a Hollywood star, so I don't quite agree this would kill her career - especially if she has kept quiet about her surgery, is not an exhibitionist and keeps her private life private.