ROME – Six leading fashion brands snubbed a recent Greenpeace survey which asked 25 'uncomfortable' questions about their supply chains in an attempt to compare the policies of high-end fashion brands on toxic water pollution and deforestation. Greenpeace Italy’s new green ranking guide was topped by Valentino - yet Dolce&Gabbana, Chanel, Hermès, Prada, Alberta Ferretti and Trussardi refused to disclose information for the survey.