Does anyone know of any doctors known for doing butt/hip/thigh augmentation?

hello thank you for your question and provided information as well..Based on the photo shown and the angle, the ideal thing is to be evaluated in person by a certified plastic surgeon, because it is difficult to orient yourself with that photo.

Far more important than the technique is the skill and experience of your plastic surgeon. Choose your surgeon rather than the technique and let them explain why one technique may be better than another.  See the below link on some suggestions on finding the most qualified Plastic Surgeon for you.  Always insist on a board certified plastic surgeon.

Hello
It is hard to say what would be right for you without better pictures.
You definitely must be evaluated first to coordinate with procedures
will fit your needs. Visit a certified plastic surgeon to accomplish
what you wished. Best wishes.
Regards
Dr. Israel Mañon
Certified Plastic Surgeon