What’s the best shape wear for the belly?

What’s the best shape wear to help smooth the belly? I’ve tried a few cheap ones in the past and they rolled down or just didn’t look right. I gained about 100 lbs last year and I’m 40lbs down since December! With spring here and summer on the rise, I just want to feel confident and more like myself.

I’m 23 and 5’6 if that helps. Just looking for something that will help smooth my stomach in dresses this summer. Tyia!!!!!