Either way, how much you love and wear the items is the true way to ensure any pieces of clothing are truly sustainable.
Some achieve a more sustainable status through the fabrics they use, opting for recycled materials or natural fabrics that biodegrade at the end of their life cycle. Others work on slowing down and reducing their production, for example making pieces to order or in very small batches. Either way, how much you love and wear the items is the true way to ensure any pieces of clothing are truly sustainable.