NEW YORK — Say goodbye to traditional fasteners — at least for this season. In their place are drawstrings, and they’re showing up on everything from sweatshirts to easy pants. The result: a look that’s both casual and street wise. Here, a cotton top and nylon pants from K-189 by Daryl K and Poleci’s micropoly and Lycra spandex sweatshirt and cotton ripstop pants from Bulldog by Urban Outfitters. For more string things, see pages 6 and 7.