I have 36D cup breasts. when you have larger breasts, a good bra is very important. A good bra gives you the necessary support and you then little back issues. I love my breasts and I am very happy how they turned out. I still love wearing bra and I love the fact that I must a wear a bra and my flesh fill the cups. I love to wear outfits that show off my cleavage. Also important (and not just women with big breasts), wear the right bra size. you will be surprised how many cis-women wear the incorrect bra size. Go for a professional fitting, I went and it turned out my cup and band size was wrong. A bra that fits right, its very comfortable and you barely feel its there.
All the women in my family are big breasted, DD and up, except my mother, she is also a D Cup, but she wears a 34D, so my breasts are technically bigger.