Refers to a person who makes or alters clothing professionally. Covers both men's tailoring and women's dressmaking.
He is a skilled tailor.
I had this suit altered at the tailor's.
仕立て屋 is a general tailor or dressmaker for everyday clothes, whereas モディスト specifically evokes fashionable women's hats or dresses.
Standard kanji spelling.
Variant spelling with 立 instead of 立て; less common but still used.
Compound of 仕立て (したて, 'tailoring, making') + 屋 (や, 'shop, person'). The spelling 仕立て comes from the verb 仕立てる (したてる, 'to tailor, to make').