I'm getting married in January and I'm supposed to be making my first dress appointment very soon. I already picked the dress out and its a size 20, but I have a lot of that "muffin top" that comes out when I try the dress on. My fiance is coming home from Afghanistan in a few days and he's going to help me slim down before the wedding, but what kind of undergarments should I buy?? I want to look slim, mostly up top but I don't know what would be best. Any help ladies??