You get to choose which type of reduction you want. Typically our corsets offer a 4 to 6 inch reduction in the waist. You must have at least that much body fat to manipulate. Ms Martha's corsets are so beautiful that most customers choose to wear them out to show them off. You get the identical reduction from an UNDERBUST as an OVERBUST or CORSEVEST. Ms Martha often brags about being able to take a simple CINCHER into your closet and make 15 different outfits suitable for a night out or a great night in. The only real difference is that the Overbust Corset is a tad bit more confining. The CORSEVEST is a special design that goes just about anywhere. The fit and coverage is sublime. Go out to lunch or add a blazer and wear it to a Church Wedding. It makes a statement where ever you choose to take it.