I am female, 5"4, body fat percentage is 28%, and 152 pounds. Can I get smart lipo at 18?

From you pictures and what you describe it seems that your problem might be partially genetics and partially an inadequate diet. In general exercise is great but does not really reduce weight and most current diets in our society are too high on carbs. A nutritional consultation would serve you well. If, on the other hand you definitively want to have liposuction it should be done with just tumescent technique and maybe a light conscious sedation. Genera anesthesia is just not needed. 
Good luck

You need a better eating plan. See a nutritionist who specializes in athletes and works with fitness models. No need for lipo. What's more minimally invasive than a better eating plan?

Thank you for posting your question. From your pictures, you seem to have good skin elasticity. Smart lipo can be a great option for you as it uses laser to dissolve and permanently remove pockets of fat while at the same time tighten overlying skin. A tiny incision has to be made so the doctor can insert the cannula into your desired treatment area, but the incision site is about the size of a pencil. I would recommend meeting with an experienced physician for an in-person consultation to learn more about the procedure and your options. Best of luck.