Going to a 1980’s Prom Theme Show

So I needed to get an outfit for this band’s show, so I headed to Goodwill. And then Value Village. Then a random thrift store. Then another Goodwill. And another. Nothing. And finally hit the mother lode of dresses at the last Value Village. I had a nice long poofie sleeved taffeta dress in mind, but there were none to be found. I finally had to get a prom dress that had vague 90s appeal. Are we really that old that the clothing of our high school years cannot be found at vintage/thrift stores anymore??!? 😂