Chrissy Teigen just showed Us why a nice cardigan is the hardest-working piece in any closet. She anchored her outfit with a cardigan that brought basics to life. We don't know the exact piece she wore, but this $20 version is just as luxe - if not more. Teigen recently posted on Instagram, looking effortlessly polished, wearing a chic spring cardigan over a simple tank top and white jeans. Her dog made a cameo (adorable, obviously), but Teigen's outfit completely stole the show. The cardigan style makes any outfit look mega expensive.