I woke up this morning in my dumpy grey PJs and while brushing my teeth, a poem by Ogden Nash came to mind. And then, a heavenly vision: slouchy, silk, pearlescent, almost translucent pajamas; mother of peal buttons; frayed hems, maybe, on the pants. Today I will buy an elegant set of pajamas. Who's with me? eBay has been a bust so far. Where should I look?