When I tried on my dress last month and it was a little snug, I headed out to buy some shapewear to help the situation. First I bought the Sensational Shaper by Assets.
I don't know if I bought it too big or what but it is comfortable and doesn't suck a damn thing in. I would wear it if I was looking to smooth out the bumps or wanted a dress or shirt to lay flatter.
So I bought these at Avenue. They work pretty well. Definitely sucks in a little bit. And it does not roll down at all. These are comfortable but I hope not to wear them on my wedding day. I'm hoping it will be warm that day and I won't want to wear an extra layer. Hopefully the DDR helps!