Brazilian Butt Lift Using my Sister's Fat?

This is a great question.
The answer is maybe but probably not. The only way this would work is if your sister is an identical twin. Otherwise your body will recognize her fat as foreign and reject it.
At Tri Valley Plastic Surgery we have performed autologous tissue transfer on twins with good results.
I hope this helps.

No, you cannot use other people’s fat. Your body would reject it.About 60% of fat from the transfer is retained and the results are permanent. The size will change with your weight just as the rest of your body does. In other words, the fat acts like it was naturally there. You can get a good idea of the final result after 6 months.

The only person who could be used for a fat transfer is theoretically an identical twin sibling. Otherwise donor fat is not acceptable.

Hi there-
The Brazilian Butt Lift is a fantastic technique that we do often with great success-- but could not be done using your sister's fat (unless she is your identical twin).
This is because your body would re-absorb the fat almost immediately after injection, recognizing it to be from another person.
In patients like yourself, often the best strategy is to have you gain a bit of weight. Once you have enough fat to redistribute to your particular goal, the procedure can be done. After the surgery you can then lose the additional weight, with preservation of your new shape- in other words you will lose weight everywhere, but the shape and proportions achieved at surgery would be maintained.

That will be possible if you have an identical twin. Seek a plastic surgeon who performs hundreds of these procedures, has great reviews and photos, and is an expert in this field.

No, i am afraid only your own fat is usable.  Even if your sister was an identical twin, it wouldn't any good for you! 

A Brazilian butt lift is a safe and effective procedure that combines liposuction of the abdomen hips waist and back and grafting this fat to the gluteal (butt) region. This is a safe and great way to create a tight waist and abdomen and a full, beautiful bottom.

Many patients ask us if we can use the fat from a friend or family member in this surgery. Although we are all grateful for people that are willing to donate, unfortunately a patient can only use their own fat for a Brazilian butt lift. Using anyone else's fat would result in terrible tissue rejection and even deadly consequences. Patients should also be aware that they may be approached by an ethical people who offer to inject other materials into the butt. This is a very serious problem here in South Florida and we have personally seen patients come to our clinic with severe deformities after receiving such injections. Always put your safety first and make sure that you work with an experienced plastic surgeon to achieve a beautiful and reliable result.
 

Sorry, ONLY YOUR FAT can be used.
Most of the time you will be able to find some fat from you to use.
If youdo not have any fat then the only option you have is an implant, or if you have enough skin and fat in the lower stomach for a tummy tuck then you may use that as dermis fatt graft for butt enhancement.

Fat is NOT an inert material. It is a living tissue that has our own individuality stamped all over it.
Like all tissues in our body, each one of us has individual sequences of protein and long sugar molecules on our cell walls which declare our individuality to our own body protection system. As a result, our immunity protection system recognizes our own cell chemical sequences as "self" and will see every other sequence, be it a bacteria, a virus, your sister's / cousin's or best friend's fat, kidney or liver as a "FOREIGN" cell which needs to be destroyed. In this way, our body kills all invading cells.
Unless, you and your sister are identical twins (having the same sequence), your immunity, if not suppressed with special medications, will attack and kills every cell (fat, kidney etc) placed in your body.
Dr. P. Aldea