Body-shaping underwear is difficult to change in general tailor shops because of its unique fabric and complex structure. I don't know whether it's a body-shaping bra, a waist clip or body-shaping pants. Body bras have steel rings, fabrics have many hexagonal meshes, while waist clips and body-shaping pants have memory alloy strips, and many of their fabrics have lycra, which is not easy to be damaged.

So I suggest that you'd better find the manufacturer of the corset you bought and send it back to them for modification, which is more suitable in terms of materials and technology.