For years, I have worn fajas. They are a rubber garment from South America. They will do a lot more than a traditional girdle. The rubber compression makes you look great while you are wearing it, but it also compresses the body and you appear thinner for quite a while after you take it off. Think about wearing a tight rubber band around your wrist and how it will still have a compressed look for hours after you remove the rubber band.
I prefer a faja with arm straps and cotton lining. You can wear it most of the day and even while sleeping. It will continuously compress your waist and stomach and you will look better every day. Every few months, I would have to order smaller size fajas, even before weight loss surgery. That is because constant wearing would compress my waist and stomach and I would need a tighter garment to get more compression.
After about two years of wearing Squeem my stomach measurement went from 47 down to 37 with no weight change. The improvement in your appearance starts the minute you put one on.
Fajas without arm straps tend to roll down. Fajas without cotton lining were not comfortable to me. For people in the United States, the best ones are available from Squeem. There are several sources on the internet to order them. Here is one link: