Using hemp, organic linen, cotton and leather, the new Conscious Exclusive collection by H&M is a study in sustainable style. Take the organic linen and silk sleeveless gown, printed with hand-illustrated birds in full flight, or the black cocktail dress made from recycled wool and row upon row of recycled sequins. 

Actress Olivia Wilde fronts the collection's campaign. "I love the Conscious Exclusive collection at H&M, both for the look, and also for its ethics," she says. "This is how all fashion should be: great style that's naturally more sustainable." 

The collection will be available in around 200 H&M stores worldwide on April 16. Put it in your diaries.