First, they gave us distressed jeans and we laughed when our dads asked if we really bought jeans that came with holes. Then, they gave us denim with clear patches at our knees (kinda like a windshield) and we laughed right along with them and thought, nah, we'll pass on those. Now, in the most questionable of denim trends, Vetements is releasing a collaboration with Levi's that includes a pair of jeans with a zipper that runs straight down your derrière. Yes, a zipper that you can zip up - or down - to expose your bare butt. If you're wondering if the cheeky trend is actually likely to catch on, we can only remind you that Vetements is also the brainchild behind unlikely fashion phenomena that include an obsession with DHL-logoed tees and sock boots. So if anyone can make butt cleavage a thing, our money's on Vetements.