I'll share my little bit:
If I were you, I would go the next size up. I always do, and they are usually a bit long for me, so it works out. I have the little bulge around my hips and tummy, so I stretch them up to where they are almost under my bust. 9 times out of 10, they stay put, and cover, conceal, and hide what I need. Oh, and I ALWAYS get the tummy control. They are tight at first, but once on and wearing them, I barely notice.