Will my breasts grow big like my moms?

I am 16 now and my cup size is only at 36b, but my mother said they would probably grow bigger since she has big ones. My body is also a lot like hers, we have the same hourglass shape, the same height range and legs but the chest is not there :(( is 16 too late? Do i still have time to grow? I dont get it, everything else on my body matches. Do u actually stop growing cupsize at 18?

Will my breasts grow big like my moms?
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