• Celebrate the Brooklyn Collective’s fifth anniversary, co-hosted by Brooklyn Collective and General Nightmare Antiques. Check out jewelry, accessories, and art from more than a dozen local artists and designers. Cocktails will be served. 196 Columbia St., nr. Sackett St., Red Hook, Brooklyn (718-596-6231); 7–11.
• Brooklyn boutique Epaulet and Styleforum.net are throwing a party to celebrate the launch of the new Epaulet x Styleforum gingham flannel shirts. Beer and booze will be served. 231 Smith St., nr. Butler St., Carroll Gardens, Brooklyn (718-522-3800); 7–10.
• All spring 2009 apparel, bags, shoes, and accessories are 60 to 80 percent off at the Hayden-Harnett fall cleaning sale. Browse past-season merchandise as well as one-of-a-kind and vintage items. Samples range from $5 to $150. Through 9/20. Greenpoint: 211 Franklin St., nr. Freeman St., Greenpoint, Brooklyn (718-349-2247); Nolita: 253 Elizabeth St., nr. Houston St. (212-334-2247); F–Su (noon–8).
• Kidrobot is offering 75 percent off hoodies and 70 percent off shirts and hats at the sample sale. 56 W. 22nd St., nr. Sixth Ave., second fl.; Th-F (11–8).