What a dorky question. But seriously! I have big boobs. When I was at my highest known weight (160), a 36DDD, and at my lowest known weight (122 a few years ago), still a 36D.
So this probably means that if a smaller-chested woman my height and I are in equally good shape, I will still weigh more & have more body fat b/c of the boobs, right? But how much more, all other things being equal, should I expect to weigh than my equally fit, but smaller-chested, sister?