I declare a garment to be “double vintage” when it’s vintage by nature and vintage in terms of how long I’ve owned it. Here’s the double-vintage Clovis Ruffin dress I wore last week to The Acting Company’s fall gala, which honored my friends Barbaralee Diamonstein-Spielvogel and Carl Spielvogel. What Wendy Wore Dress: Clovis Ruffin (purchased…