You can post in local Facebook groups (such as neighborhood groups or groups for moms in your area, etc.) to see if anyone has recommendations for good sewists or tailors. You can also try searching Google for "seamstress" or "tailor" + your city name to see if that brings up any good options. Another option would be to go to a local bridal salon and see if they have any recommendations for sewists or tailors who could help you with this. They may even be able to do it themselves if it's a simple alteration. Also, from what I remember, the guys from
https://www.bellabarnett.com/collections/mini-dresses have a tailor, so you can contact them for help. They are very receptive. I ordered some dresses from them and am delighted.
