The terminology seems to vary from one place to another. In OZ the guys are tailors, the ladies can be tailors, dressmakers or seamstresses and the term "machinist" can be either men or women. I have known a number of ladies who could make men and women's suits, shirts, bridal wear, stretchwear, swimsuits, sportswear and the list goes on and on. Long ago there used to be "sweatshops" here when the rag trade was in full swing before the market was flooded out with Chinese imports and most of the folks doing the sewing were women of migrant origin working for appallingly low wages or doing outwork at home for even less.
Most of the ladies I knew worked for themselves and made specialised garments for unusual customers.