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The poll, conducted by Listerine to mark National Smile Month, revealed that one in five Brits think Cheryl Cole has the best smile in celebsville.
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The Girls Aloud star even beat Kate Middleton to the top smile spot, with the Duchess of Cambridge coming in second place for her pearly whites.
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Holly Willoughby came a close third, beating Hollywood celebrities including Cameron Diaz, Angelina Jolie and Julia Roberts to join Cheryl Cole and Kate Middleton to secure the top three spots.
Watch Cheryl Cole's dramatic beauty transformation...