Is there a surgery you can get in order to widen your hips?

Hello dear!!
Thanks for the question and provided information as well.
Looks like you could benefit from a fat transfer to the hips, but unfortunately, without pictures, it is very difficult to give you a proper answer. 
The average cost varies a lot depending on the clinic, the country and the plastic surgeon. 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 :)

You may want to consider fat transfer surgery.  But to achieve a more proportionate appearance, your buttocks might be included as well.I hope that helps and good luck.

Thank you for your question about Butt Augmentation.Butt Augmentation with fat transfer can be targeted to add more fat to the sides and essentially widen your hips.
To be sure, see two or more experienced,
board-certified Plastic Surgeons in your area for a complete evaluation to make
sure you are a good candidate and that it is safe for you to have surgery.
I hope this helps.