Apparently, Mary-Kate Olsen isn't the only street style favorite who's opting for Vans slip-ons for all her spring sneaker needs. This weekend, Emily Ratajkowski was spotted in New York City wearing a pair of the brand's best-selling sneakers. Like Olsen, Ratajkowski is a fan of Vans' OG Classic Slip-On sneakers, though the supermodel and author opted for a more exclusive pair from