actually I think it is just her tiny-ness and baggy shirts tend to make people look alot skinner than they are...
I have the same body shape as ayu, short and skinny ^_^ My metabolism keeps me eating but not really putting on any weight besides muscle mass... I think because Ayu is so active nowadays... she is starting to fill out because of muscle mass... that's what happened to me...
I don't know how asian metab works but that's just a thought ^_^ I know it feels to be skinny and people always say 'You need to gain weight' and believe me I eat healthy and work out... not anorexia not bulimea, just my body type
