Exactly how much fat is needed for a "fat transfer" to the hips? (Photo)

Thank you for your question and photographs.  From your photo and your own description, you appear to be too thin to achieve the results from your goal photographs, and would need to gain a substantial amount of weight.  I would see a board certified plastic surgeon who can perform a physical exam to best assess your chances of a successful fat transfer.  

My recommendation is that you find an ASPS board certified surgeon in your area who specializes in the BBL, and set up an in person consult. An in person consult with an an ASPS board certified surgeon is the only way to determine the best route for your body and your goals. Work with your surgeon to make sure they know the specific areas you want to add plump. On some occasions patients who are devoid of the fat cells necessary for the BBL are asked to gain weight.From your pictures it looks like you may need to gain weight - but during your consultation your surgeon will lay our the best plan for your body.It is all about designing the perfect plan for You.Good luck, please let us know how it goes.-Dr. Constantino Mendieta

I think that you need to be seen in person to determine if you have enough donor sites to harvest from. Best of luck.

The pictures posted show that there is not enough fat to reshape the buttocks, hips area. Liposuction of the abdomen and flanks will reshape the body and give curves. Fat obtained can be transferred to the hips.As for the buttocks, may want to consider a buttock implant.