How much would I need to weigh in order to get a bbl with fat transfer?

While there is no absolute number (lbs.) in terms of weight for undergoing liposuction with autologous fat transfer, the optimal candidate has reached a healthy and stable weight (preferably with a BMI less than 30, which is associated with a lower incidence of complications).
Potential candidates should also have adequate fat reserves for transfer. This becomes especially important when one considers the anticipated rate of fat resorption and graft loss. I typically recommened patients aim for at least 500 cc transferred per cheek. This would amount to 1 liter of fat (not lipoaspirate) after processing. Candidates with inadequate fat reserves are likely to be disappointed with their ultimate volume once healing is complete. It is difficult to offer any real advice or guidance without at least some photos for visualization. It is important for patients to realize that liposuction with or without fat transfer is a contouring tool and not a means to achieve weight loss. It is often helpful for patients to perform a systematic self assessment in order to identify areas they hope to treat or improve as well as provide goal photos in order to paint an accurate picture of their expectations. Your board certified plastic surgeon is uniquely qualified to evaluate patient expectations and develop an appropriate strategy for moving forward.As always, discuss your concerns with a board certified plastic surgeon.

You may be at a very good weight.  Pictures or an exam would be necessary to provide a solid recommendation.Kenneth Hughes, MDLos Angeles, CA

I would recommend an in person consultation to evaluate how much fat is available for the transfer. Seek a plastic surgeon who performs hundreds of these procedures, has great reviews and photos, and is an expert in this field.