If you lose weight do your boobs shrink?

typically the answer is yes, but only as a direct result of the fact that they get larger when you gain weight. A woman with an A cup I would not expect to lose anything during weight loss because there isn't that much fat stored there. I have never met a woman with an A cup that needed to lose weight though. If you are an A cup there is no possible way it is healthy for you to lose 50 pounds.