The easiest way to add some color to your makeup routine this season? Line your eyes in a bright, shimmering shade like Olivia Wilde did last night. At a dinner celebrating her April Marie Claire cover, Olivia wore bright blue eyeliner around her eyes, which is right on trend for Spring. A quick swipe of an eyeliner pencil, like Clinique Chubby Stick Shadow Tint in Big Blue ($16), evenly distributes color over your lid and under your lower lash line. Be sure to use a thin black liner around the inside of your eyes for depth and definition. Just finish with a swipe of black mascara and nude lipstick for a look that's fit for a Spring fete.