Realistically yes, the boobs and butt getting bigger was fat getting moved around. To grow bigger you would need to promote bone growth and from where would the material to grow bones even come from??? And actually when your bones do grow it is painful, puberty is kind of an awkward period and from medical journals and research I have read the most painful part about it is the bone growth experienced in growing taller. imagine going through that growth spurt in like one day it would be agonizingly painful not to mention the stretch marks and maybe broken skin..... Unless your talking about losing height then you would just lose bone density but grow weaker idk man i think it's the right call to keep it where it is, I mean in real life people get surgeries that require their bones getting broken and then having pieces of bone surgically attached at the shins to get an extra inch or more.