Tomima of HerRoom, wrote an excellent article about the structure of modern shapewear and how garments comfortably contour bodies into classic silhouettes like those seen on Mad Men. You can read it on Lingerie Briefs.
She even went on to talk about Rago Shapewear. “Take Rago, for instance. They’re pretty much the Cadillac of shapewear manufacturers. With decades of design experience, they’ve honed the construction of their shapewear to deliver true, consistent contouring and smoothness.”