Weight loss from boobs

[CurseOfCurves89]

Eurgh. I've lost 2 stone since May this year with calorie counting and exercise. I can feel myself getting fitter, but I don't actually see any difference when I look at myself, except my boobs which look smaller
Can anyone tell me why this has happened? There's plenty of fat elsewhere, and my boobs are small enough already, without them disappearing!