Anderton, Harry Potter star Emma Watson, Jasmine Guinness and Jade Parfitt were all on the front row at William's London Fashion Week show at Vauxhall Fashion Scout. After the show the celebrities were all fighting to get William to dress them.
Sophie, 31, managed to get him to dress her for the British Fashion Council party and was so keen she squeezed in a fitting straight after the show. She gushed: "He's so talented and just such a lovely guy as well."
William, 22, winner of the Fashion Scout Merit Award, was sponsored by Sony VAIO and the stars were all delighted to discover their goody bag included a Sony VAIO P-Series and an exclusive clutch bag - designed by William for carrying the portable computer in style.
Sophie said: "It's perfect for a gal like me who is always travelling and doing business."
William said: "I am thrilled to be collaborating with Sony on the launch of its VAIO P-Series laptop. It is such an exciting opportunity and fantastic that my label has been recognised by a world leader in product innovation."