I don't bother sucking in my belly, but I suspect my bodysuits may be doing that job for me later this year.
I don't like waistbands so, instead of wearing panties, I wear bodysuits as underwear. Right now, I have a set of bodysuits by Torrid that are size 6, their largest size.
The bodysuits are loose on me now, but I am looking forward to gaining to much weight that I look like a stuffed sausage in my bodysuits
.