You won't starve your baby. Your body will send everything needed to the baby.
However, YOUR body will be completely shot by the time this baby is born. You can expect bone demineralization and probably a whole host of malnutrition diseases, not to mention barely functional levels of body fat. Keep in mind that if your body doesn't maintain a certain amount of fat, your body may spontaneously abort the pregnancy (or go into pre term labor, depending on how far along you are at the time). Such a small amount of body fuel can lead to gestational diabetes, pregnancy hypertension, and pre eclampsia, among other things.
Dr. Tom Brewer recommends women eat around 2500 calories a day, for optimal health of both mother and baby.
at 9:48 PM on Aug. 3, 2010