It’s hard on the wallet to be a social butterfly these days–all those new dresses you have to buy so that people don’t see you in the same outfit twice! A penny-pinching party girl might head to Borrow a Dress Couture, a new boutique near Belmont and Sheffield that offers designer dresses for rent. Not only does it save you money (and closet space), it gives those who didn’t luck into a sizable inheritance the otherwise unlikely chance to swan about in creations by designers such as Badgley Mischka, Marchesa, and Alexander McQueen, which can retail for hundreds or thousands of dollars. Rentals start at $35 and go up to about $400, and if you’re not a skeletal social X-ray, no worries: they’ve got frocks up to size 18. Clutches and outerwear are also available, and they even carry maternity styles.