The future's so bright for the stars of The Voice, they've gotta wear shades.
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At a recent photo shoot to promote NBC's talent competition, debuting April 26, the celebrity coaches—Maroon 5's Adam Levine, Cee-Lo Green, Christina Aguilera and Blake Shelton—along with host Carson Daly, slipped on sunglasses courtesy of the spectacle-loving Green. Each coach already has a distinct sense of style but, according to Shelton, it's Green who is teaching them all how to look their hippest. Says the country singer, "I've really grown very fond of Cee-Lo. He may be the coolest human being I've ever met in my life."