Warrendale, Pa.-based rue21 Inc. will open 12 stores in Long Island, N.Y., through a partnership with Sabre Real Estate Group. Currently, the teen retailer operates about 24 stores in New York’s Nassau and Suffolk counties, with two Long Island stores open in Tanger Outlets at The Arches in Deer Park and the Westfield Sunrise Mall in Massapequa. The new stores are part of rue21’s previous announcement that it would open 120 stores this year in spaces that range from 4,000 sq. ft. to 5,000 sq. ft.