Im a huge fan of Kettlewell Colours. I'm shocked and very surprised to read of a few poor experiences but mine has been the opposite: incredibly helpful CS team, lovely colours and styles that are varied enough for almost everyone. There is a little elastane in many styles, it's true, but this helps keep the shape of the garment. There are also many pure cotton styles, plus modal, linen, viscose and lyocell mixes. The clothes aren't cheap but not are they throwaway fast fashion: choose carefully according to your colour palette and body shape and you have a product that will last for years and the basis of great coordinating outfits. Returns are less straight forward than previously but still free and you can order different styles or colours to try on at home. They've brought me fizzing out of my long-term black and navy era into the wonderful world of colour and I haven't looked back.