If you have extensive loose skin, as you mentioned, then you would need a full tummy tuck, which does involve repositioning the belly button. The belly button skin (in the depths of your current belly button) will still be the same belly button skin that is present afterwards, except that it will be sewn into skin from higher on your abdomen that has been pulled down as part of the tummy tuck. That means that there WILL be a scar around the belly button, which may be noticeable in some patients, and almost invisible in others. In most patients (unless they are extremely thin with no fat on their abdominal skin), there is enough depth of the abdominal skin to create a belly button that is deep (not flat), with the scars below the surface, where they're less visible. You as the patient can also tell your plastic surgeon what type of belly button you'd like, if you have specific preferences. The surgeon could then try to give you the appearance you want, although the appearance cannot be guaranteed, nor can the quality of the scarring. For example, you could express your preference for a larger belly button or a smaller one, or for one that is rounder or one that is more vertically elongated. Your surgeon can try to achieve those goals for you, but things may not heal exactly as planned. Above all, please keep in mind that almost all tummy tuck patients are extremely happy that they had the surgery, whether their belly button is beautiful or not. Even if your belly button does end up looking slightly "odd," it's a small price to pay for the tremendous improvement in how you look and feel (and it may not look odd at all!).