Hairstyle File: Kelis

When you think about true modern style innovators, only a few names spring to mind--and one of them is always Kelis. Since she first burst on the scene ten years ago with "Caught Out There," the delightfully kooky, unabashedly avant garde singer has kept us guessing with her envelope-pushing hairstyles. In honor of her brand-new album, "Flesh Tone," let's take a look back at Kelis' most memorable hair moments, from emerald-green curls to a pink pixie cut.