The Duke and Duchess of Cambridge, William and Catherine at a private dinner at Claridge's hotel in Mayfair. Kate was in a long cream dress that touched the floor and slit at the thigh with crystal-studded Jimmy Choo Vamp sandals that revealed painted toenails, while Prince William was in a suit. Kate's dress was believed to be a design by Roland Mouret. Pictured: The Duchess of Cambridge, Catherine, Kate Midddleton, Catherine Middleton