Introduction The Brazilian butt lift, also popularly known as fat transfer to the buttocks, is one of the most popular plastic surgery options to enhance the derriere. This procedure is best for patients who want to achieve shapelier buttocks with mild projection and natural results. However, you need to have excess fat in your body to be a good candidate for the BBL. The surgery uses the surplus fat available in your body to enhance your buttocks, unlike butt implant surgery that uses foreign objects. The BBL uses a combination of liposuction and fat transfer to enhance your buttocks. Liposuction is first used to extract fat from the fat donor areas like the abdomen, sides, and flanks, and then the fat is injected into the derriere. Unfortunately, some patients don’t have sufficient excess fat available in their bodies, which raises concerns about whether they will achieve the desired projection and shape. In this article, I will tell you whether it is okay for you to gain weight before the BBL if you don’t already have enough donor fat in your body. Is it OK to gain weight for the BBL? Being concerned about lacking the required amount of body fat for the BBL is reasonable; however, it is not entirely well-established. If you want to improve the shape of your backside and add mild projection to your buttocks, then even a little amount of excess fat in the body areas like the midsection is enough to achieve these results. What this means is that even most skinny patients can be good candidates for the BBL. Keep in mind that improving the shape and projection of your buttocks doesn’t only depend on the amount of fat transferred. In fact, around 50 percent of the results come from liposuction of the areas framing the buttocks, such as the sides, flanks, thigh, upper back, abdomen, etc. When the surplus fat is extracted from these areas, it will naturally make your buttocks look shapelier and prominent. The fat removed from the target areas is then injected into the areas of the buttocks that need contouring like the upper and lower buttocks and even the hips. As a result, the buttocks gain additional projection and shape. This goes a long way toward improving the buttocks and making your figure curvaceous and sensual. During a typical BBL procedure, the average desired amount of fat required for each buttock is between 400 cc to 800 cc. To achieve the desired results, the plastic surgeon will remove about 2-4 liters of fat from your body. Furthermore, it is crucial that the fat is removed carefully so that more than 80 percent of the fat cells survive and are unharmed. During liposuction, about 10-20 percent of the fat cells may be injured or killed. These are removed during the fat purification process. Only healthy and alive fat cells are injected into the booty. In light of the aforementioned, most patients do not need to gain weight before the BBL. Also, gaining more weight before the BBL is not recommended. Most patients already have the required amount of fat in their bodies. Most patients who gain weight before the BBL do so without first consulting with a plastic surgeon. They assume that since they are thin, they do not have sufficient fat for the results they want to achieve with the BBL. Even though the volume of fat available in your body is a contributing element to your candidacy for the surgery, it is not the only factor that is taken into account. Instead of resorting to gaining weight, you should consult with a board-certified plastic surgeon who is experienced in BBL. The surgeon will examine your existing butt shape and projection, which is likely the most predictive element for achieving impressive results. If your surgeon determines that you lack some percentage of the fat required for enhancing your buttocks, he may tell you to gain a few extra pounds before the BBL. Gaining a few pounds is only reasonable when the plastic surgeon says so. Else, the primary goal of the BBL is to enhance your anatomy, instead of worsening it. Do not gain more than a few pounds of extra weight because it can affect your figure and silhouette in negative ways. Gaining more than the required weight before the BBL not only means the development of fat under your skin, but it can also lead to more fat around your organs and intra-abdominal fat. Never forget that liposuction can remove the excess fat only from under the skin and not from around your organs and inside your abdomen. Getting excess fat in those areas can lead to adverse aesthetic changes in your belly and other body areas. It can also be dangerous for your health. Furthermore, the volume of extra fat a thin a person can achieve with a few weeks’ weight gain is pretty small and not likely to create any reasonable impact on the final results of the BBL. At the minimum, you are required to have at least one liter of fat in your body as a thin patient to achieve good results with the BBL. Many people also assume that by gaining weight, they can achieve more projected buttocks. But the fact is that the projection in the buttocks after the BBL is not only determined by the fat, but also by the volume of projection already existing in the buttocks and how elastic the skin is. If your skin is extremely tight, you may not gain more projection, no matter how much fat is transferred to the buttocks. Can someone else’s fat be used as donor fat? Many women wonder whether someone else can donate fat for the BBL patient. Keep in mind that fat donation like other tissues is deemed as a tissue transplant. It involves incredibly sophisticated rules, protocols, procedures, and regulations. As such, using fat donation for the BBL is not reasonable in plastic surgery from a logical viewpoint. It is also important to look at this point from a medical angle. If you use the fat donated by someone else who is not an identical twin, then your body is going to reject the fat. This means that your immune system will see the fat as an outside agent and attack it, leading to liquefaction of the donated fat unless you continuously use immune suppressants. The use of immune suppressant medicines comes with many risks and side effects. It is not reasonable to take such risks for the sake of your cosmetic appearance. Achieving your desired results with the BBL Most patients are good candidates for the BBL if they have enough excess fat in their bodies. Only in minor cases are patients told to gain a few pounds before the procedure. Even if you are thin, you should consult with a plastic surgeon to determine your candidacy for the BBL instead of resorting to gaining weight. The BBL is an invasive procedure that uses a combination of liposuction and fat transfer to the buttocks. The plastic surgeon will start by making tiny incisions on the fat donor areas. The common fat donor areas include the abdomen, sides, flanks, love handles, upper back, and thighs. Liposuction involves the insertion of a hollow tube called a cannula into the target areas through the incisions. The cannula is given back and forth movements to release the fat cells. Once the fat cells are released, the plastic surgeon will use a low-pressure suction pump or a special syringe to remove the fat carefully. He will then suture and close the incision. The same process will be repeated on all fat donor areas until the required amount of fat is harvested. In the next step, the plastic surgeon will treat the fat in a centrifuge so that it can be purified and the impurities and dead and damaged fat cells are discarded. Once the fat is processed, the plastic surgeon will inject each fat cell into the derriere. Injecting the fat into the buttocks takes the most time and calls for attention to detail and a high sense of aesthetics and artistry. This is where the surgeon will carefully carve your derriere into the shape and projection that you desire to achieve. Once all the fat cells are injected into the buttocks, the surgery will come to an end. Conclusion The Brazilian butt lift is an effective and common plastic surgery procedure that is used to enhance the buttocks. Also known as fat transfer to the buttocks, the BBL uses the extra fat available in different areas of your body to augment your backside and make you look curvaceous. It uses liposuction to extract the fat, which is then injected into the buttocks. Many women wonder whether they have enough fat to get the BBL and whether they need to gain weight before the surgery. I have answered this question in detail in this article. To know your candidacy for the BBL, be sure to consult with an experienced, board-certified plastic surgeon.