Sustainable (natural) Fabrics vs Synthetic Fabrics

Whilst researching the types of fabrics I want to use for my collection, I have realised that sustainable, organic fabric such as pure cotton, linen and silk would be perfect to use. However, I have found that these types of fabrics can be really expensive, therefore   I may have to rethink the fabrics I will be using. Sustainable, plant and animal fibre fabrics are the most eco-friendly types to use, and the neutral colour scheme of these fabrics compliment the colour palette of my collection perfectly. I visited the fabric shop the other day to buy some samples for my sketchbook, and see what I could potentially use in my collection. Whilst looking, I realised it was going to be rather difficult to source sustainable fabrics as well as them being out of my price range. Therefore, my solution to this is to use a mixture synthetic and sustainable for my collection, or maybe use fabrics with mixtures of synthetic and sustainable fibres. An example of mixed fibres is polyester and cotton; cotton is lightweight, breathable and comfortable to wear against the skin, whilst polyester is strong, and doesn't wrinkle or stretch when washed. In addition, to add a drape-like feature, viscose is also added to these blended fibres, viscose is a semi-synthetic fibre, as it is sourced from bamboo, however requires hard processing to develop the fibres from the pulp. As the first outfit of my collection requires drape, this may be something of consideration.