Margot Robbie has mastered that elusive New York rich-girl uniform, and lately, it seems to hinge on one key piece: perfectly slouchy denim that looks lived-in in the best way. There's something about a relaxed, baggy silhouette that instantly makes an outfit feel cooler, quieter and more expensive. It's the kind of staple that doesn't try too hard, but somehow pulls everything together. While out in New York City on May 4, the Barbie star leaned into that formula with a crisp white tank, a relaxed black blazer and a caramel shoulder bag.