Maybe I'm missing something but I always thought renting designer clothes has a limited market.

People who attend many special events a year where they need a new outfit for each one typically have the disposable income to outright buy their clothes or have companies borrow them clothes for the publicity.

The average person who goes to a few special events a year? You can buy a nice outfit for just a little more than what they're renting a designer dress for. And you get the keep it forever and wear it some time later.

The only time I've rented a dress was for prom and that was because it didn't make sense to buy a dress I was going to outgrow in a few years.