Mary-Kate and Ashley Olsen made a rare public appearance in New York City on Thursday, and proved they are just as stylish as ever in matching black looks.  The 39-year-old twins looked incredible as they walked through Midtown Manhattan, with Mary-Kate dressed in a long black trench coat, black pants, a white scarf and sunglasses while her sister sported blue jeans, a mid-length black coat, a black scarf and sunglasses.  The former wore her blonde hair down in beachy waves, as the latter kept her brunette tresses tucked into her coat. They both arrived carrying crocodile leather handbags and walked to their lunch date with a rare smile.  © BrosNYC / BACKGRIDMary-Kate and Ashley were seen out and about in NYC on Thursday Mary-Kate and Ashley rarely appear in public anymore, since retiring from their acting careers in 2012. Together, they established their fashion label The Row in 2005, which has grown in popularity by leaps and bounds in recent years and has been worn by the likes of Jennifer Lawrence, Hailey Bieber and Dakota Johnson.  The former child stars even …