Last month, we called it: Tulle is having a major moment — a major Carrie-Bradshaw-approved moment, that is. These flow-y, princess-all-grown-up pieces are the perfect antidote to tougher trends, like army-inspired jackets and your favorite pair of sneakers, so they're shockingly versatile. And, it looks like people are starting to catch on, because this $20, mint-green H&M take on the trend has completely sold out online (the black one is still up for grabs, though!).