Fit Asian but have always struggled with a flat ass! Am I genetically doomed? (Photo)

Dear Jeepgirl_xoxo,based on your photos, it does look like you are fit. It would be the best to visit a board-certified plastic surgeon and get an examination to be sure that you have enough fat to harvest and transfer. Daniel Barrett, MD, MHA, MS 
Certified, American Board of Plastic Surgery  
Member, Am. Society of Plastic Surgery

Thanks for posting your photos. BBL's can be performed in patients who are skinny. Also, having a BBL doesn't mean you will get wide hips or a big butt. The volume you would like to add and to location of where the fat to be added should be discussed with your plastic surgeon and together, you can create a surgical plan. In you, I suspect there will be a struggle in obtaining enough fat. Fat may have to be removed from alternative areas of your body and not just your abdomen and thighs. Ultimately, the quantity of fat is an important aspect of a BBL and so a limited amount of fat may require you to adjust your expectation of the volume increase you were hoping to have. Besides implants, local tissue can be rotated in to augment you buttocks. While this result is "natural", the prominence and location of the scars makes these techniques have limited usefullness. My advice is to seek a board certified plastic surgeon who has experience in performing BBL's in women with smaller figures. Good luck!