Whether it's on the bottom like Emma Stone's, encircled all around like Hilary Swank's, or on the top, à la Diane Kruger, it's clear to see that turquoise eyeliner is having a moment. Personally, I love the way Diane smudged her blue-green liner at the base of her upper lids at Elle's 17th annual Women in Hollywood event last night. But what about you? Is this a look you'd adopt into your Fall 2010 beauty palette, or should this trend be left for the red carpet?