The television presenter even went for liposuction on her tummy and hips while being filmed for her MTV show called 'Whole Again'.
However, in a rather slurred interview on ITV's 'This Morning' the 28-year-old admitted that she was still smoking.
Thus, Hamilton warned her that smoking would certainly harm her surgery.
"The risk of wound or healing problems with the skin or nipple is a risk for everyone," The Sun quoted her as saying.
She added: "In smokers it can be worse because less oxygen reaches the tissue. I've never seen a nipple turn black and drop off, but it has happened. It's a good scare tactic. I told Kerry."