Getting six pack abs through liposuction is not all it seems. Just this week, I had to transfer fat from a patient's thighs to her upper abdomen in order to fix it after she'd had botched liposuction from a surgeon trying to give her "six pack abs." Her skin had lumps and bumps, akin to a cobblestone street. Her skin was basically cemented to her underlying muscles. She was so self-conscious of her appearance, she had stopped wearing bikinis.
Unless you're a body builder (or some other type of athlete) who does their due diligence and actually works hard and eats an extremely low fat diet to obtain a low body fat percentage, any artificially created abs are going to look...well, artificial. If the rest of your body doesn't match, it's just not going to look right. Furthermore, if an expert in liposuction is not performing this trendy procedure, you run the risk of ruining your abdominal contour.
It is normal to have a layer of fat on the abdomen, even in lean people, so that the abdomen doesn't look like skin is directly on muscle. That is not an aesthetically pleasing or normal look. In summary, liposuction of the abdomen is quite normal and safe in the right hands.