Weight - It fluctuates, but on my digital scale I can weigh anywhere from 31-38kg. On the normal scales, I'm about 40-44. So I don't know how much I really weigh.
Height - 5'3.
Size - 4/6/8. Depends on style and fit, I can fit a few 10's.
I have a small stature and a fast metabolism, so I'm an exception I suppose.