Small boobs plz help IDKK

So I got my period when I was 11 and I was pretty fast at starting everything except my boobs please don’t judge me for this I’m just pretty insecure about it and want any answers or personal stories . I’m 14 yo, 5.2 and weight 40-42 kg I’ve always been very skinny, I do circus/aerials 3 times a week and have since I was 7and so I’m pretty strong I have never had any sort of eating problem or any other health issues. My boobs haven’t grown in at least a year and I’m really just hoping it doesn’t stay that way I’m a 32 a or 10 b nz/aus. On both sides of my family the females all have at least a reasonable size cup. So please if anyone knows anything I would really appreciate any knowledge, help or advice.