Yuyan is 5'5" 110lbs and wears a size X-Small

size	chest (cm)	length (front) cm	length (back) cm
xxs	40	25	21
xs	42	26	22
small	44	27	23
medium	46	29	25
large	48	31	27
x-large	50	33	29
xx-large	52	35	31