What: Glam up your eyes with a dose of this season’s hottest eyeliner hue: vibrant blue.

What the experts say: A-list makeup artist Amy Nadine, who has brought The Hills’ Lauren Conrad’s peepers front and center with a slash of aqua, tells us,

“I love blue eyeliner on the bottom lash line as a fresh and fun way to enliven your face and make your eyes pop.��? She doesn’t go the traditional route, however, and nixes eyeliner in favor of metallic powder eye shadow. “Apply it wet with an eyeliner brush, starting thin on the inside corners and expanding the width gradually as you drag the brush to the outside corner.��?

What we say: A flash of bright blue eyeliner is an easy way to introduce color to your makeup—even if you’re weary of hue-tiful eyes. First seen on the Spring 2008 runways and now flaunted by Superbad starlet Emma Stone at the 2008 MTV Movie Awards, this trend has plenty of optic nerve. If you are as masterful as Amy, you’d track down Mark Gorgeous Eye Trio in Aqua Wave ($4) and apply it like a pro. But if you just can’t get the hang of shadow as liner, L’Oreal HIP Color Truth Eyeliner ($7.20) offers a pigment-packed Navy shade that imparts quality color, but can be smudged for a smooth, smoky look. Feeling a tad bit adventurous? A thick line of waterproof Revlon ColorStay Eyeliner in Teal ($7.49) will add a divine pop of color certain to leave you feeling blue (in a good way!). For those seeking high drama (and who are willing to part with a few more greenbacks), MAC Cosmetics Fluidline in Blue Peep or Waveline ($15) brings new meaning to the term “eye candy.��? Our advice? Stick to navy pencils and a light touch to ease into the trend. When you’re ready to jump into this blue streak, graduate to liquid liner in peacock and teal.

Photo from wireimage.com