Leave it to the ever-stylish Cara Delevingne to wear a monochromatic ensemble with such pizzazz (swapping style secrets with bestie Kendall Jenner, perhaps?). In taking a pair of classic trousers to the next level she proves that the workwear staple can be made all the more interesting by simply incorporating a bit of texture. By opting for a blouse with sheer, lacy detailing, the look reads cocktail-ready rather than office-bound (an easy day-to-night styling trick to keep in mind). Team with a pair of pumps in a complementary color and voilà—monochrome has never looked so good.