A necessary evil of the postpartum state is some kind of stomach sucky-holdy-in device. I am a big fan of Spanx. These put grannie panties to shame in their size and they are impenetrable. If Kevlar designed undergarments, Spanx is what you would get.
While they easily shave inches off your waistline (once you get into them, which can take some time), I don't recommend eating a large meal in Spanx. I was caught off-guard by an unexpectedly large meal that put my Spanx to the test. And guess what? In all of their sucky-holdy-in glory, Spanx don't leave you any room for food!!!! By the time you get to a place where you can take them off, you feel like a stuffed sausage or a hot dog (the kind in a natural casing that snaps when you pierce it).
So, the lesson here is: Spanx are great, but a large meal in Spanx, not so great.
Hmmm, maybe if I wear Spanx all of the time, I'll just stop eating large meals, which would ultimately eradicate the need for Spanx. Too bad I love food too much for that particular approach!