Just make sure the top and the bottom look balanced wearing a skimpy top with a big, high-waisted bottom looks odd. The right shape and cut are essential. Also look for solids rather than prints. Strong Lycra-spandex adds control and plays up the waist. Avoid wavy stripes, stretched-out fabric and extra material or length.
Dark colors are magical tamers, but don t choose a suit too plain.
Finally, choose a proper fabric, anything too thin will not conceal body bumps. Draped or gathered fabrics can work wonders, as can fabric with some texture. Just avoid shiny materials, these bring out the worst. Light colors and high cuts would also make it look like you've got curves. Like people who don't have much waist, florals, prints, or stripes will make it look like you ve got curves.