People are being urged to get behind Fashion Revolution Week, which kicks off today.
It's aimed at informing customers of horrific conditions for workers where the clothes people buy are made.
Simon Pound says many people don't know how their clothes are made.
"It's very difficult for consumers to know whether their clothes have been made in human conditions, with good labour laws, and to a good environmental standard," he says.
Mr Pound says if clothes are extremely cheap, customers should be suspicious.
"The only way it gets cheaper is if they're being made with horrendous labour conditions or labour bordering on slave labour."
He says there's a simple way to get involved.
"Take a picture of the label inside your clothes and share it under the hashtag #whomademyclothes. If what you are wearing is made in New Zealand, it's very likely that the people that made it have good labour conditions."
Friday marks the anniversary of the Rana Plaza disaster in Bangladesh, when the eight-storey garment factory collapsed, killing more than 1000 people.