Cosmetic techniques can do some amazing stuff. There are ways to lengthen bones in legs, alter the shape and position of facial features, alter the length and shape of the vocal cords, seamlessly integrate an enormous bosom onto a tiny ribcage, strip away half of one's body fat in an afternoon.
In TV, however, such surgery is most often depicted as a magic wand for turning one actor into another. [...] [tvtropes.org]