On a recent November day, when the temperature in New York fell precariously close to freezing, and the downpour was relentless, Telsha Anderson had her hands full at T.A. — the clothing boutique she opened earlier this year in Manhattan’s Meatpacking District. All afternoon, a steady stream of shoppers had been popping in to marvel at the vibrant interiors — think Memphis Group meets the set of a Solange video — and browse the racks of PH5, Simon Miller, Barragán, Gauntlett Cheng, and more. “I think people like to shop on rainy days,” Anderson mused, stepping away to offer styling advice to a woman considering a plaid Ottolinger dress. She made the sale.