The most expensive item of this thrifted ensemble is the opera length gloves ($20 shopgoodwill.com). The evening clutch - well worth the $6 investment.
Detail on the Zum Zum dress ($10 thrifted)
I am also sharing this 1967 Simplicity pattern, model 1 is holding a pair of white gloves in her hand. I remember that style being called a "baby doll" dress.
FIVE THINGS ONLY THRIFT SHOPPERS UNDERSTAND