I feel my boyfriend's friends don't respect me?

i have a wonderful boyfriend that treats me so well and I have been with him for 10 months. my issue is his friends. they constantly talk about my breasts just because I'm 16 and 32DDD. I act nice as if I don't have boobs and they still talk about them. how do I gain respect from them?
I feel my boyfriend's friends don't respect me?
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