A significant percentage of the world's pesticides, herbicides, and water is used in growing and processing the fibers that are made into our clothing. You can find soy shirts, hemp scarves, recycled cashmere sweaters, bamboo blouses, organic wool vests and organic cotton tees. Choosing clothing conscientiously could also mean checking for fair trade certification, whether an item is union made, made by local artisans, or sweatshop-free.
Try to find clothes that are unbleached or bleached with hydrogen peroxide only, and that use natural or low-impact dyes and no wrinkle-free treatments (these can be toxic).
Be sure to also visit vintage clothing stores and resale shops, as they are inherently positive on the reduce/reuse/recycle level. Sustainable clothing and shoes are areas with still-emerging standards, but at this point, Greenopia's evaluating stores based on the percentage of goods sold that are made with recycled content, organic, natural fibers, or a blend. Greenopia also reviewed whether or not the store's carry-out bags or packaging were biodegradable, compostable, and/or made with recycled or recyclable material, vegetable-based inks, and/or chlorine-free paper.