Something almost as good is available now! A surgery which installs an internal bra, one which prevents that most awful of all possible outcomes: sagging. And the risks are not really that great:
Surgeons make two tiny cuts less than a centimetre wide underneath each breast.
Silicone cups like the ones used in a traditional uplift bra are then are then inserted around 1cm below the skin.
Then surgeons fit fine straps made from a strong material that will hold the bra in place without it sagging These are attached to the ribs between the breast and the shoulder with a pair of titanium screws.
Then they are stitched to the cups and everything is tightened to lift the breasts into the desired position.
How about internal underwear for men, too? Like a silicone jockstrap inside the skin? Bolt it to the hip bones with some titanium screws, and you are all good to go.
Sigh. I guess this might be no more dangerous than silicone breast implants.
Link thanks to AA.