Top Indian fashion designers and models have joined the International Fund for Animal Welfare's (IFAW) global campaign against the illegal shahtoosh trade - a finely woven shawl made from the pelts of the highly endangered Tibetan antelope, or chiru.The Wildlife Trust of India (WTI), in collaboration with the Fashion Design Council of India, launched IFAW's Say No to Shahtoosh campaign this week in Delhi at the India Fashion Week.