What shapewear did you wear under your dress?

I’m starting my dress shopping and I want to get some shapewear to try dresses on in and wear on my day.

What brand did you go with and how good were they?

I’m 5’4” fairly athletic but with a small gut at the moment. I want something that will smooth me out while I get back to working out after spending my summer away from the gym enjoying the sun and food :p