Not only is Hilary Duff designing clothes for Barbie, but she has become one. The Red Carpet Glam Hilary Duff Doll is available - surprise! - just in time for Christmas, and the likeness is outfitted in a polka-dot dress with a red sash and sunglasses. A Mattel rep says the Material Girls star and Barbie are "great role models to girls and the perfect design duo. Not only are they two of the most stylish entertainers, actors and fashion designers, but they also show girls there are no limits to what they can do."source