Why buy, when you can borrow? According to Metro News, Keira Knightley is curbing her “footwear fetish” by renting shoes for the day and returning them, for a fraction of the price of buying a new pair. It’s a trend that’s gaining popularity faster than the Sunggie.

Dress Vault is a great example of this burgeoning borrowing frenzy. A “fashion-based service of mutually-beneficial relationships,” Dress Vault operates in the women’s-used-apparel-goods market, and facilitates lending and borrowing of dresses between its users. It’s kind of like a sexier version of E-Bay, except you’ll never be stuck with something you thought was going to be stellar-fantastic and turned out to be eight sizes too big and have a hole in the crotch. Not that I’m speaking from experience or anything. Check it.