I have not done this; actually I have wanted to be where you are now, believe it or not. This is the only reason I am posting this for you. Luckily, I went from a 'D' to a 'B' at least after nursing. You are fortunate as I never could fit ANYTHING for my tops previously and it still can be crazy! All shirts were made for smaller chested women it seemed! Or at least anything I want(ed).
I can say this... I have seen some women that have had this done, mainly after surviving breast cancer and it can be very painful. There are always issues that can arise later afterwards that are not thought of too much when it is in the 'now'.
I am sure you are a very beautiful and lovely woman. If your hubby is happy, I feel you should just really, really consider this as there is pain (when lifting/carrying your child) or after-affects that I would never want to see happen to any woman. Embrace yourself in the 'Now' and see yourself as Mother Incarnate. Even if that is with a small chest... Many of us other Moms would LOVE to be in your place! (funny how that works!)
Good luck in your decision, and I hope you do decide against it... Besides; all the bras and bikini tops are padded anyway. I could never find much without it when I needed to! :)