For those of you who, like me, make a beeline to the fourth floor of Barney's (hello, salon shoes), and then leave, take a gander to the second floor to check out YSL's new vintage line. Stefano Pilati took vintage Yves Saint Laurent fabrics and created a new, ultrachic, sustainable collection. The 50-piece collection contains pieces that are one- or two- of a kind and range from strapless sheaths to ombre, eyelet-patterned jeans. In Pilati's words, the collection "fuses fashion and intelligence." My favorite is the khaki sheath, a timeless buy. The items range from $495 to $4,100.