Mary-Kate Olsen Blond Hair Pictures

Mary-Kate Olsen was out and about in NYC today for a solo shopping trip, leaving one store with a heavy-looking box. The designer wore a black quilted-leather jacket, a printed scarf, and pink oxford slip-ons for the outing. Mary-Kate was just on the cover of April's Elle UK to chat about her high-end fashion line The Row that she started with sister Ashley. In the magazine's pages, Mary-Kate showed off her personal style, for which she is known, and opened up about other celebrity fashion lines. She said, "Of course we knew about the trend of celebrities as designers, but we'd done that already when we were much younger. I don't understand the new idea of designers as celebrities either. To me, the Phoebe Philo [Celine designer] kind of modesty is the way to go. We love beautiful things. That's the only driving impulse."