What is pinar kasgoren?

Unfortunately, as an AI language model, I do not have access to all the information available on the internet so I cannot provide in-depth information about Pinar Kasgoren. However, from what I have gathered, Pinar Kasgoren is a Turkish fashion designer and stylist based in London. She is the co-founder of the sustainable fashion brand "Cossac" which offers eco-friendly and ethical clothing options. She has been featured in various publications such as Vogue, Elle, and Marie Claire for her work in sustainable fashion.