Classic Jackie O. Dresses are joined by futuristic silhouettes when vintage shop Antoinette (119 Grand St., nr. Berry St., Williamsburg; 718-387-8664) hosts a pop-up for the Greenpoint-based emerging-designer showroom Of Us from August 9 to 16. Antoinette’s latest offerings—a sixties flared eyelet dress, Deco-style chunky pearls (all under $100)—will share space with a slew of New York labels: a laser-cut, purple leather sheath by Sobotka ($498); A rope-trimmed black slip dress by Uye Surana ($225); turquoise-inlaid brass bangles by Giantlion ($54). Opening night, a D.J. will spin and complimentary white-wine spritzers and beer will be on hand from seven to nine.