What can be done about my posterior thigh and butt area post weight loss? (Photo)

Thank you for your question. Over the last several years, I have developed a technique termed "thong" left. It addresses the lower pole of the buttock ptosis/laxity is very common in many women who have lost weight or of had liposuction in this area. I believe you would also benefit from adding a small amount of volume via fat transfer to your buttock as well. You should be able to have an excellent result. Best wishes to you.