Without the benefit of photos it's impossible to give you an accurate assessment. The mere fact that you had a previous tummy tuck does not preclude a fat transfer. There are multiple areas that can be utilized to obtain donor fat.......hips, flanks, abdomen, thighs, upper arms. The key is............ does the surgeon have a keen sense of aesthetics? Can he/she create a shapely, attractive buttock or are they just technicians that wind up with large unshapely behinds? The same holds true for the liposuction portion of the procedure. Understand that liposuction whether SAL, PAL or UAL ( not including LAL because the fat obtained through this technique will not be useful) is not that technically challenging. However, the keen aesthetic eye will determine the eventual work of art.We are creators and have the ability to turn out beautiful works of art. Simply put................not all artists create quality work.Always seek out the opinion of a surgeon certified by the American Board of Plastic Surgery with years of experience in liposuction and fat transfers. Furthermore request to see before and after photos of previous patients by that doctor....not a clinic or surgery center. Do your homework......research and verify the doctor's credentials. Good luck, Dr. PG