It's likely you've already enlisted a white shirt as one of your hard-working wardrobe staples. Crisp, versatile and elegant, few pieces define the 'effortless chic' cliché as regularly as this trans-seasonal winner. Paired with a mini and cut-off ankle boots or as part of the fabulous leather pants and fresh-to-death kicks combo, a white shirt is often the understated hero in a winning ensemble: think Ron and Hermione, Dr John Watson or Khloe Kardashian. Update your reliable favorite for this high-necked, sharply structured top that'll never cross that delicate line from enhancing to overshadowing your outfit. Just ask Nicole Richie, Karolina Kurkova or Iggy Azalea.