I agree you can find good items in supermarkets but need to be very selective. I am a huge fan of Sainsbury’s 100% cotton plain t-shirts in white, red, black or navy. They are £4! The cotton is thick and washes well. There is a reason the white is usually sold out... I live in fear the next batch will just not be the same. (They last ages, but for in future when I do need to replace!). However, they work for me because they fit so well. A different body shape, different story? The vast majority of their tops I would not touch.
I had a hit and (mainly) miss order from New Look recently where things that looked great at a distance went back because either the material looked or felt cheap/unpleasant on my skin, or they were very poorly sewn together. This is the one thing I kept which is absolute class with neutral flat sandals, neutral bag and a (cheap) m&s fedora:
www.newlook.com/uk/womens/clothing/dresses/summer-dresses/white-spot-puff-sleeve-midi-shirt-dress/p/652401819
To look polished you need something to “lift” your outfit above nice but bland. You also need nothing to “let it down“ (e.g. scuffed or dirty footwear, badly fitting, fabrics that don’t hang well, colours or patterns that don’t go well together).
Two other suggestions for looking polished. One cheap (free?), one expensive.
Think about how you stand and how you walk. Good posture and graceful movement are priceless. Improving fitness, stretching and walking as much as you possibly can all help you “wear your clothes” better. There must be videos and advice on this online. YouTube equivalent of a deportment class?!!
Teeth. Lots of people mention good hair, and I agree. Teeth are the next thing that can either enhance or detract from your appearance. Appearance isn’t everything and if your teeth work and don’t cause you pain then that’s the main thing. If you are happy with your teeth then that’s brilliant. But... if I was not, I would save up and spend my money on dental work ahead of any haircut, hair dye, handbag, pair of shoes, make up, clothes anything... for best long term investment. Good teeth can transform your appearance and confidence. If relevant, and possible, I would suggest braces (or Invisalign or that sort of thing) to straighten what one has, rather than veneers which don’t look natural, and deteriorate and stain. I wore braces for years and years as a teen due to functional problems with my teeth but am so grateful now that they are straight. I have looked after them because I value this so highly.
Finally, polished to me is probably more “style” than “fashion”. Think about overall shape/silhouette, being able to move naturally, can you have fun in your clothes? Despite the lecture above I generally tend towards casual and bland because I rarely want or need to look polished
. But I can bust it out it I need to!