Every year, 300,000 tonnes of unwanted clothing goes into landfill in the UK.
Clothing has the fourth largest environmental impact after housing, transport and food, according to the organisation WRAP.
To tackle the problem, several businesses in Wales are trying to create more sustainable clothes using recycled fabrics to help reduce the amount of waste, which could be damaging the planet.
After going to music festivals across the UK, Welsh fashion designer Beth noticed that hundreds of tents were being left to waste. Seeing them sparked the idea for her business.
And Beth's not alone in creating an environmentally friendly business in Wales.
Heidi-Louise Griffiths co-founded the company MAYHKER, which tries to use less waste in its manufacturing.
One lecturer at the University of South Wales says more of us need to change our shopping habits.
Last year, a Commons Select Committee on the environment began an inquiry into the sustainability of the fashion industry. The committee chair said we don't know how to recycle our 'end-of-life' clothing. But one charity has come up with answer.