Twin Transplants: The Science of Shared Fat?

What if you're someone who's pretty lean would it is it advisable to use the fat from someone else? Can you do that? So interesting like the last surgeon to win a Nobel prize Joseph Murray he performed the first kidney transplant and Siamese twin so it'd have to be a twin basically to have the exact same genetic material then transfer and this has been done because Bob Allen who's a cancer reconstructive plastic surgeon who you know pretty famous in terms of reconstruction he performed what's called the DIEP free flap which is taking the lower abdominal tissue connected to the blood vessels that run through the rectus muscle the six pack muscles transferring up to the chest and hooking them up to the blood vessels underneath that the heart surgeon chews internal memory artery and vein and he did that in twins because it can't be rejected because it's got the same same genetic material so that's the only instance of it because you would, you would reject it Bunny would reject.