If she REALLY wants to be in this biz, then she should milk every niche along the way that she can ... right now she needs to stay natural and develop as much content as possible in the "young, 18" niche ... in three years her body will be different ... get the boobs then, after the changes. When/if she still wants boobs (after 3 years) , get Dr. Diacco in Tampa. He's one of the best. Oh yeah ... get her pregnant for some content right before the boob job.
