Gucci has tapped British beauty Lilly Donaldson for its new Hysteria Collection ad campaign. In the ads for the Italian fashion house's latest line of oversized, exotically-skinned carryalls, Donaldson frolics with a knight in golden Gucci armor. Donaldson, who appears on the cover of the new British Vogue, has also starred in ads for the likes of Prada, Dior, Jil Sander, Burberry and Dolce & Gabbana. See the gallery for the complete set of Hysteria images.