As a tall girl (like, really tall), where to buy clothes that had long enough sleeves to fit. I was confused for a long time because there isn't a single clothing store to my knowledge in the U.S. that actual sells tall sizes in the store. So I was buying T-shirts, dresses, and unflattering mens' clothes. But a lot of those stores do have tall sizes, just on their website and in limited quantities. All my friends are shorter, so no one in my life knew this, and generally have been skeptical when I tell them that no brick-and-mortars actually have anything that fits.
Another thing I've learned is that I should be slow to jump on seasonal clothes, and that you save money in the long run by spending more on clothes, or by buying vintage clothes that existed before the brands enshittified. Most of my favorite tops are vintage Eddie Bauers, LL Beans, and Long Tall Sallys that I've carefully picked up from Poshmark over the years, and they've really stood the test of time.