Fast fashion generally refers to lower quality, low-priced, mass produced, and machine-made garments that quickly get thrown out.  Slow fashion, on the other hand, are often made by hand, consume time to produce, use artistic talents, and have better quality and are higher priced.  They are comfortable for an extended period of time, years or even a lifetime. 

Slow fashion designs are often classic and have been thoughtfully designed.  These are not seasonal garments, nor are they trendy.  Slow fashion garments take time to design, produce, and have purpose in your wardrobe.

You have a choice to buy things that are better quality, limited edition, and long lasting.

 When shopping slow fashion on a budget consider the following:

• Care for your existing pieces
• Be picky and save up for quality clothing
• Shop second hand & vintage
• Buy directly from creators
• Avoid trends by knowing your personal style.

Undersummers by CarrieRae is an example of a slow fashion apparel brand for women.  Since the beginning in 2011, CarrieRae Munson, the founder has sought to design long lasting garments that will become your favorite go-to undergarments for wearing under dresses.  Every Shortlette, shorts to wear under dresses, have been thoughtfully designed with a unique seam-free inner thigh which resists holes or tearing when faced with thigh rubbing.  Additional features include a non-compression stay put leg and no-roll waist.  Every Shortlette designed by CarrieRae has beautiful feminine details to compliment a woman’s curves, making the Shortlette more than just a functional under dress short.  Shortlette slip short competitors often rely on inexpensive microfiber tubes with legs, without regard for body shape or style.  CarrieRae’s mission is that the Shortlette is your everyday favorite underwear for under dresses, which offers you long lasting value for many seasons.  You can’t put a price on happy thighs.

Reference: https://www.fibre2fashion.com/industry-article/8460/fast-vs-slow-fashion