The JCP POSH Pop-Up (née the JCP Girls Garage Sale) opens Monday and runs through Friday. Let’s skip right to the impressive list of designers whose new and “gently used” clothing and accessories you’ll find for 50% to 90% off: Alaïa, Alexander Wang, Balenciaga, Chanel, Chloé, Christian Louboutin, Derek Lam, Dolce & Gabbana, Hermès, Jimmy Choo, Lanvin, Loro Piana, Louis Vuitton, Marc Jacobs, Marni, Michael Kors, Missoni, Miu Miu, Monolo Blahnik, Moschino, Narciso Rodriguez, Prada, Proenza Schouler, Philip Lim 3.1, Rag & Bone, Stella McCartney, Theory, Tod’s, Tucker, Vince, and YSL. Hello! Now you know why it’s called POSH. There will also be new clothing for babies and kids. Sales from the pop-up benefit the Jewish Community Project Downtown.

The JCP POSH Pop-Up is at 64 N. Moore (between Hudson and Greenwich), and the hours are 9 a.m. to 9 p.m., except Friday, when it closes at 4 p.m. Questions? Email popshop@jcpdowntown.org.