“Stealth wealth” became A Thing in 2023. TikTok was awash with “get the look!” fashion videos; magazines full of think pieces on crisp white shirts and camel cashmere. The idea is to ooze money — or at least look like you do — in classic, understated cuts and colors. What the Streeps and Paltrows have been doing for decades is now the standard for the aspirational and chronically online.