Lots of adjustment straps help create a form fitting and curvaceous look. Depends on how tight and rough you like it. The strap attaching the collar to the corset is adjustable for the perfect fit, as is the crotch strap, which can also be used as a chastity/punishment/training strap.
Measurements:
Collar fits from 14″ to 17″, neck: 6″ to 9″
Upper arm restraints: 8.5″ to 14.5″
Lower arm/wrist restraints fit from 7″ to 11.5″
Crotch strap adjusts from 15.5 – 25″
Waist corset adjusts from 28″ – 33″