Calvin Klein has partnered with Opening Ceremony to reimagine its most iconic wardrobe staple: underwear. Combining OC’s logo with the classic CK waistband, the exclusive line of undies bring together both brands’ innovative designs to create a piece of fashion history. “I only wear Calvin Klein underwear so it only made sense to do something with them. And it’s the first time ever that Calvin Klein Underwear has done a partnership,” says OC founder Humberto Leon. “Calvin Klein underwear is where designer underwear began, so it’s super special.”