Now I think I have your attention, can anyone tell me why my boobs are getting smaller and I'm getting fatter? I know it's been the holidays (and in all honesty I haven't been eating, but I thought I'd gain weight from drinking) and I am, or at least definitely feel massive but my boobs are small? Over the summer I had lost weight and then gained some after but it would have gone back to normal. But my boobs are getting smaller and I'm getting fatter and it's not helping my mood. Im under 18 as well so I was confused.