This has cosmetic surgery implications.
I don't think so. It's not the mammary glandular structure itself that gives the human breast shape; it's the surrounding padding of fat and the underlayment of muscle. Nonlactating mammary glands are actually quite small. When you are admiring a nice pair you're actually admiring a wad of fat held in place with ligaments and connective tissue. There's nothing to indicate that this discovery will influence the way that fat is distributed and suspended.