I can’t afford a seamstress, but since I live in a rural area and do construction work, jeans, a shirt and boots are my “uniform” most of the time. I’m tall and a readily available anywhere size 5 fits fine-but I’m always mindful of the way even my jeans look-I like to be neat and tailored-not going to wear fussy stuff that is intended for a shorter woman with a curvy frame, or stuff without a defined waist and hips-I’d look ridiculous, no matter how expensive the designer garment was...
If you’re a size 5 likely you look pretty good when you do deck out. .....BTW seam-stresses are less expensive than you think, especially in rural areas.