Are there ways for someone to change their body type? What if they lose weight and get plastic surgery?

I was told by a guy friend that I have a wrestler's build and was compared to a wrestler. If I lose about 30 lbs (I'm currently 5'6 and 1/2 and weigh 138 lbs), get liposuction in the waist, hips and thighs and wear a corset, won't I look more frail? I want to look frail and weak
Are there ways for someone to change their body type? What if they lose weight and get plastic surgery?
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