Dianna Agron stopped by Late Night with Jimmy Fallon in New York with a smoky cat eye that looked seriously sultry for a hot summer night. To keep eye makeup put in a haze of humidity try using an eye primer to absorb oils and give the shadow something to adhere to. Then, with a metallic silver pencil draw an exaggerated outline from the inner corners of the eye, jutting out slightly toward the temple. Smooth a pale grey shadow into the crease before gliding a deep charcoal or black liner over the top and bottom lash lines to create dramatic definition. Try it now and have it perfected in time to be your go-to look for fall.