• Meet Carven designer Guillaume Henry as Alexa Chung hosts the label's first New York trunk show at Barneys. 660 Madison Ave., nr. 61st St. (212-826-8900); noon–6.
• Join Parsons and Loomstate at "Zero Waste Denim," an exhibit that showcases fashion design processes that produce no fabric waste. Through 2/23. An opening reception will take place from 6–8 p.m. on 2/8. Parsons The New School for Design, 66 Fifth Ave., nr. 13th St. (212-229-8919); noon–6.
• Select merchandise is up to 60 percent off during Armani/Casa’s seasonal sale. Through 2/27. 97 Greene St., nr. Spring St. (212-334-1271); T–S (11–7), Su (noon–6).