An estimated 46 million people are living as slaves, according the 2016 Global Slavery Index by the Walk Free Foundation, which said Uzbekistan - the world's fifth-largest cotton exporter - Turkmenistan and Tajikistan were forcing people to work in the annual cotton harvest.
Over 264 brands have signed up to a global pledge set up by the Responsible Sourcing Network (RSN), run by the California-based charity As You Sow, vowing not to use Uzbek cotton until the government stops using forced child and adult labor.
"I think many consumers would be appalled to contemplate the notion that their garment they're wearing could be the product of human trafficking," Hayward said.