What things do they take into account to qualify?

For context, my breasts are pretty large for my frame. I am 26 years old, 5’1 ~130 lbs. I don’t know my exact cup size (big) but my biggest issue is how much my breasts sag. I have zero volume up top and they literally point to floor, which I feel like is why back hurts so much is because they’re literally dead, saggy weight pulling on my upper back. It’s been this way for as long as I’ve had breasts. My question is, do they take sagging into account for qualification?