My mom body shames me LOL

My mom is so mean to me and doesn't believe I fit 32c. I fill that size out and I did my measurements. She constantly picks on me about my breast size and how my boobs are small (she was small before those implants). When I mentioned it she was basically like "wtf you could never fit even close to a C, maybe an A". She always makes negative comments. Her and her friend always tell their kids "you'll end up flat chested like Erica if you don't eat right" so they can get her kids to eat better. It sounds funny, but I think it's incredibly rude. Do people ever make fun of you for your boobs...?