There is an excellent tailor in the plaze in Sosua where Orange has its store. Near Banco Popular. Go all the way to the plaze. The tailor is in the back corner closest to Banco Popular. There are others on DR1 that use her as well.
In Sosua on Calle Anna Maria next to the barber shop is a Haitian tailor. He is excellent. He has a treadle sewing machine and this is amazing to watch