1. Go online.
2. Go to an online store that's slightly above your price level, but the sale section is do-able (try J.Crew, Revolve, Anthropologie, etc.).
3. Look through the sale section. Spy a cute, cheap skirt/shirt/dress.
4. Examine it further. Realize it's the only piece of clothing you ever want. Realize you cannot live without it.
5. Check what sizes it's available in.
7. Briefly wish you were a size large so you could buy it.
8. Get depressed.