Not giving this product a bad grade, but I've read the other reviews and I think they are a bit misleading. This product does suck you in and tighten your waistline but it's not some magical miracle worker or anything. Also, I'm already an hour glass shape and this actually sucked in my hips and gave me a less hour glass shape, so be forewarned curvy ladies. I ended up trying to hike it up so my hips could stay big and the underwear came with it. not comfortable. Still, very glad I got this. It's comfortable enough to wear all day for whenever you need to look your best. I'm a size 10-12, curvy, 5'2" and I got a large. I think a medium would be too tight in all the wrong places, hope that helps!