• Castor & Pollux marked down clothes by Acne, Built by Wendy, and 3.1 phillip lim by up to 70 percent off. Through 9/12. 238 W. 10th St., nr. Christopher St. (212-645-6572); Mon.Sat. (noon7); Sun. (16).
• The end-of-summer sample sale at Project No. 8 features extra discounts on men’s and women’s apparel from Martin Margiela, Sunshine & Shadow, and more. Through 9/6. 215 Centre St., nr. Grand St., second fl.; (212-925-5599); Thurs. (59); Fri.Sat. (noon7).