Hips are 85cm and I want 90-95cm - What's the best process?

Fat grafting to the hips is usually a great way to shape your hips. The limiting factor here is mainly your skin. If there is little skin laxity and the tissues become to tight, the pressure may jeopardize graft survival.But fat grafting should give you what you want.

   I perform fat grafting to the hips several times each week, and it is a very effective technique.Kenneth Hughes, MDLos Angeles, CA

Hello dear!!
Thanks for the question and provided information as well.
You could probably benefit from a BBL, but unfortunately, without pictures, it is very difficult to give you a proper answer.
In general, you need to be physically healthy and at a stable weight, have realistic expectations, be a non-smoker and your BMI needs to be 30 or less. l recommend you to make an appointment with a board certified plastic surgeon to talk about your goals and anything you need to know.
Good luck :)