Cotton On - AU, online at cottonon.com, save money on hot items when shopping on Cotton On - AU when applying our coupons, promo codes during checkout. Trust us, these coupons are good. Make the best of our Cotton On - AU promo codes to get 10% OFF. All discounts are totally free to use. Cotton On is an Australian retail chain, known for its fast-fashion clothing for men, women, teenagers and children. It has almost 1200 stores in 12 countries and employs 17,000 staff in Australia and internationally.Cotton On also operates Cotton On Body, Cotton On Kids, Rubi Shoes, Typo, T-bar and Factorie and owns Supré.