Is it possible to decrease the size of my pelvis to have a more masculine hip ratio?

Dear faitala3411,
it is hard to tell for sure without an examination. Generally speaking, it is not possible to reduce the size of bones but liposuction can remove excess fat from that area. If you are considering surgery, I would suggest you consult a board-certified plastic surgeon. Only after a thorough examination, you will get more information and recommendations.
Daniel Barrett, MD
Certified, American Board of Plastic Surgery
Member, American Society of Plastic Surgery
Member, American Society of Aesthetic Plastic Surgery

I would not consider performing such an invasive orthopedic procedure for a cosmetic enhancement. The chance of complication or residual pain should always be considered.

Without pictures we can’t really make any assessments or give you recommendations.
No one is going to reduce your pelvis for cosmetic purposes.
Depending on your BMI and fat distribution body contouring with Liposuction and or fat transfer are probably your only realistic options.
Best,
Mats Hagstrom MD