Goldfrapp performing at the Royal Albert Hall wearing Hussein Chalayan"My composition is the most important aspect of my work – the way in which I drape. I work with transformation in order to create new shapes. In the past two or three years, there has been a greater element of couture within my work. I have learnt a lot by working with Vionnet – I have definitely explored a new dimension. Eveningwear has really evolved for me, as well as my coats and my tailoring of course, which I have always...