LA-born label Reformation takes the title for the most sustainable yet tap-worthy garms around, and it’s pretty hard to compete. Focusing on all aspects of the supply chain and being a 100% carbon neutral company, it’s as if we needed any more reasons to buy into this brand with a heart; but look no further than the Kourtney dress if you did need a little persuader. Whipped up with a sustainably sourced crepe it features a sweetheart neckline and a playful glimpse of touch of skin via the side splits.