Paradis posing in a ruffle-edged yellow sundress and in an embellished zip-up utility jacket with botanical print trousers, all from H&M's new Conscious range

And in a rather more radical eco-friendly commitment, the company will let customers exchange up to two bags of unwanted clothes - from any label - for an H&M voucher, in selected stores. The company says the initiative is the largest of its kind by a retailer and is designed to prevent the clothing from going to landfill.

The Conscious range will also extend across menswear and childrenswear.

Do you go out of your way to buy ethical clothing? Let us know what you think of H&M's Conscious initiative below or on Twitter

Words: Anna Pollitt. Images: H&M

Vanessa Paradis: The ethical face of H&M