Buy used, ideally at a local thrift shop or consignment store. There are used clothing apps like ThredUp and Poshmark if you’re looking for something specific, but keep in mind they’ll likely ship in plastic so use sparingly. I haven't bought new clothes since February 1, 2018, when I bought a dress and jumpsuit from Anthropologie. I wanted a couple nice outfits for a wedding and dress rehearsal dinner. At the last minute, I decided the dresses in my closet didn't fit the occassion, so I impulsively bought these. In the future, I'd like to plan ahead and buy used. Or, ideally, I'll just wear these again! In the time since, I've only bought used clothes. I don't miss buying new at all, and it's saving me a lot of money. Also, there's such variety and abundance at thrift shops. P.S. Did you know that there isn't enough demand for used clothes? A large percentage of donated clothes are exported and sold in developing countries, some of whom are so inundated with clothing they're considering a ban on imported used clothing. By shopping for used clothing and limiting your purchasing of new clothing, you help divert resource-heavy textiles from landfills.
Opt for natural fibers such as cotton, hemp, and linen. Synthetic fabrics include polyester, rayon, nylon, acrylic, spandex, etc. If you have clothes made of synthetic fibers (most of us do), wash them in a GuppyFriend bag so the microplastics don’t enter rivers and oceans.
Find recycling programs at end of life. Some stores offer shoe and clothing recycling where the textiles and rubbers get repurposed.