My dear cousin, Katie, is the most fashion-forward person I know. Every time there’s a family event, she’s always there sporting the most adorable outfits. Last Thanksgiving, she wore the most graceful and elegant dress I’ve ever seen, and I immediately assumed it was a designer piece from Gucci or Chanel. But when I showered her with compliments about the dress, she leaned in to whisper, “I bought it from Walmart.” I was stunned. Ever since then, I’ve been a fanatic when it comes...