22. The Floral Blouse — Spring's craze of florals on top of florals might be a bit much, so why not start with just the ultimate essential: a pretty floral blouse. Elegant and utterly timeless, our favorite versions have a soft drape and deliver that insatiable craving for color and pattern we just can't live without right now. 

Zara Floral Crepe Blouse, $59.90, available at Zara; Beltrami Vintage Floral Blouse, $113, available at Farfetch.