How to achieve a small waist!

I really want to get a smaller waist, especially the area around the belly button. I’m slim and dont have fat, but the shape of my hip bone or whatever makes me look like I have a big waist. I want to know what exactly what and how I need to do this to shrink my waist. So it’s the bone that I want to make smaller then I’d looks slimmer. Would I have to do tight lacing? If I wore a corset every night, but not in the day, would my waist decrease in time? How do I know what kind of corset to get, where to get it it? Does the forming and molding process of your figure/shape make your inside unhealthy? Like even if you do it all gradually can it effect a baby if you get pregnant? I dont want to hurt my body, I want to shrink my waist in a healthy way, please help me! Is there a way to minimize the waist in a healthy way the is wont effect anything? I need to know what to do. Also what is a girdle? should I wear that at night? I want to wear what I need to aat knit then it not noticable. Would girdles reshape my firgure? And its more like my lower waist (belly bottn area) that’s wide. Thank you so much P.S. if you want to know I want to make my waist around 4 inches smaller!