Blake says wearing a bra doesn't prevent your breasts from sagging and not wearing one doesn't cause your breasts to sag. “Wearing a bra doesn't affect the risk of breast sagging, or what is called “breast ptosis.” It also won't impact the shape of your breasts.

What happens if you don't wear a bra?

"If you don't wear a bra, your breasts will sag," says Dr. Ross. "If there's a lack of proper, long-term support, breast tissue will stretch and become saggy, regardless of breast size." ... Aside from the aesthetics, a lack of proper support (i.e. not wearing a bra) can also potentially lead to pain.

Is it healthier to go braless?

Many factors can play a part in your breast cancer risk, but going braless isn't one of them. The bottom line: "generally speaking, wearing or not wearing a bra really won't have a significant impact on your overall health," she says, adding that it's entirely a personal choice.