A seamstress to make up a favourite top.

I have a Marc Jacobs sleeveless top in a soft fabric. The design and cut are beautiful, but after wearing it for several years, it is rather worn out. I'd like to find a similar material and have two copies made up using the existing garment. Happy for it to be taken apart and used as a pattern. It has a nice neck detailing and side pockets, so needs someone with experience. The job would involve sourcing the material and making up.
This would be a job for someone based in Southern UK, London ideally.