Leading youth-oriented apparel retailer American Eagle Outfitters Inc on Thursday posted a 7.1 per cent slide in May same-store sales at its American Eagle outlets. The Pennsylvania-based chain said in a statement that taking into account its Canadian operation,  Bluenotes/Thriftys, May same-store sales dropped 7.7 per cent, with Bluenotes/Thriftys' same-store sales down 14.7 per cent.