Can I Transfer Fat From My Breasts to My Butt for a Brazilian buttlift (BBL)?

I would not recommend fat transfer from the breast to the buttocks.  The breast has some fat, but some of the breast tissue will be transferred as well.  Diagnosis of a possible cancer in those areas may present an issue in the future and may go undetected.

The thinner patient requires an expert at liposuction to remove as much fat as possible while leaving the skin smooth. This is all a question of balance and proportions.  Fat can be taken from many different areas of the body including abdomen, sides, back, bra rolls, thighs, arms, underarms, etc.   You have to consider not only which areas will have perhaps the best fat, but also you have to consider which donor sites will have the fewest problems afterward with the liposuction.  In general, the abdomen and thighs are preferred, but, if those sites are not available, other areas can be used.  Creative liposuction with fat transfer to the hips can make them appear lifted and rounder.  

Dr. Kenneth Benjamin Hughes, Los Angeles Plastic Surgeon