M.R.
I would not have bared my middle after my second, but I did get some really nice core muscles underneath by adding a lot of core exercises and starting Pilates. I have too much loose skin to ever wear anything too revealing, but there are some really flattering bathing suits out there with shirred middles or support panels in the waist--can you try one of those? I know women with amazing bodies who still say that there is some loose belly skin, so I imagine some of it is just time and some of it is health, but the rest might be there to stay. :(