13. The White Sneaker — Maybe it's because Audrey Hepburn has been on our minds (did Rooney Mara really not think about her when she was getting ready for the Oscars?), but the little white sneaker is most definitely on our must-have list for spring. We like 'em with long dresses, cropped pants, tailored shorts, even a casual suit — you name it, we'll try it. 

Tretorn Skymra Sneaker, $70, available at Tretorn; Topshop White Canvas Lace-Up, $36, available at Topshop.